ElementDefinition constructor

const ElementDefinition({ @JsonKey(name: 'id') String? fhirId, @JsonKey(name: 'extension') List<FhirExtension>? extension_, List<FhirExtension>? modifierExtension, String? path, @JsonKey(name: '_path') Element? pathElement, List<ElementDefinitionRepresentation>? representation, @JsonKey(name: '_representation') List<Element?>? representationElement, String? sliceName, @JsonKey(name: '_sliceName') Element? sliceNameElement, FhirBoolean? sliceIsConstraining, @JsonKey(name: '_sliceIsConstraining') Element? sliceIsConstrainingElement, String? label, @JsonKey(name: '_label') Element? labelElement, List<Coding>? code, ElementDefinitionSlicing? slicing, String? short, @JsonKey(name: '_short') Element? shortElement, FhirMarkdown? definition, @JsonKey(name: '_definition') Element? definitionElement, FhirMarkdown? comment, @JsonKey(name: '_comment') Element? commentElement, FhirMarkdown? requirements, @JsonKey(name: '_requirements') Element? requirementsElement, List<String>? alias, @JsonKey(name: '_alias') List<Element?>? aliasElement, FhirUnsignedInt? min, @JsonKey(name: '_min') Element? minElement, String? max, @JsonKey(name: '_max') Element? maxElement, ElementDefinitionBase? base, FhirUri? contentReference, @JsonKey(name: '_contentReference') Element? contentReferenceElement, List<ElementDefinitionType>? type, FhirBase64Binary? defaultValueBase64Binary, @JsonKey(name: '_defaultValueBase64Binary') Element? defaultValueBase64BinaryElement, FhirBoolean? defaultValueBoolean, @JsonKey(name: '_defaultValueBoolean') Element? defaultValueBooleanElement, FhirCanonical? defaultValueCanonical, @JsonKey(name: '_defaultValueCanonical') Element? defaultValueCanonicalElement, FhirCode? defaultValueCode, @JsonKey(name: '_defaultValueCode') Element? defaultValueCodeElement, FhirDate? defaultValueDate, @JsonKey(name: '_defaultValueDate') Element? defaultValueDateElement, FhirDateTime? defaultValueDateTime, @JsonKey(name: '_defaultValueDateTime') Element? defaultValueDateTimeElement, FhirDecimal? defaultValueDecimal, @JsonKey(name: '_defaultValueDecimal') Element? defaultValueDecimalElement, FhirId? defaultValueId, @JsonKey(name: '_defaultValueId') Element? defaultValueIdElement, FhirInstant? defaultValueInstant, @JsonKey(name: '_defaultValueInstant') Element? defaultValueInstantElement, FhirInteger? defaultValueInteger, @JsonKey(name: '_defaultValueInteger') Element? defaultValueIntegerElement, FhirMarkdown? defaultValueMarkdown, @JsonKey(name: '_defaultValueMarkdown') Element? defaultValueMarkdownElement, FhirOid? defaultValueOid, @JsonKey(name: '_defaultValueOid') Element? defaultValueOidElement, FhirPositiveInt? defaultValuePositiveInt, @JsonKey(name: '_defaultValuePositiveInt') Element? defaultValuePositiveIntElement, String? defaultValueString, @JsonKey(name: '_defaultValueString') Element? defaultValueStringElement, FhirTime? defaultValueTime, @JsonKey(name: '_defaultValueTime') Element? defaultValueTimeElement, FhirUnsignedInt? defaultValueUnsignedInt, @JsonKey(name: '_defaultValueUnsignedInt') Element? defaultValueUnsignedIntElement, FhirUri? defaultValueUri, @JsonKey(name: '_defaultValueUri') Element? defaultValueUriElement, FhirUrl? defaultValueUrl, @JsonKey(name: '_defaultValueUrl') Element? defaultValueUrlElement, FhirUuid? defaultValueUuid, @JsonKey(name: '_defaultValueUuid') Element? defaultValueUuidElement, Address? defaultValueAddress, Age? defaultValueAge, Annotation? defaultValueAnnotation, Attachment? defaultValueAttachment, CodeableConcept? defaultValueCodeableConcept, CodeableReference? defaultValueCodeableReference, Coding? defaultValueCoding, ContactPoint? defaultValueContactPoint, Count? defaultValueCount, Distance? defaultValueDistance, FhirDuration? defaultValueDuration, HumanName? defaultValueHumanName, Identifier? defaultValueIdentifier, Money? defaultValueMoney, Period? defaultValuePeriod, Quantity? defaultValueQuantity, Range? defaultValueRange, Ratio? defaultValueRatio, RatioRange? defaultValueRatioRange, Reference? defaultValueReference, SampledData? defaultValueSampledData, Signature? defaultValueSignature, Timing? defaultValueTiming, ContactDetail? defaultValueContactDetail, Contributor? defaultValueContributor, DataRequirement? defaultValueDataRequirement, FhirExpression? defaultValueExpression, ParameterDefinition? defaultValueParameterDefinition, RelatedArtifact? defaultValueRelatedArtifact, TriggerDefinition? defaultValueTriggerDefinition, UsageContext? defaultValueUsageContext, Dosage? defaultValueDosage, FhirMarkdown? meaningWhenMissing, @JsonKey(name: '_meaningWhenMissing') Element? meaningWhenMissingElement, String? orderMeaning, @JsonKey(name: '_orderMeaning') Element? orderMeaningElement, FhirBase64Binary? fixedBase64Binary, @JsonKey(name: '_fixedBase64Binary') Element? fixedBase64BinaryElement, FhirBoolean? fixedBoolean, @JsonKey(name: '_fixedBoolean') Element? fixedBooleanElement, FhirCanonical? fixedCanonical, @JsonKey(name: '_fixedCanonical') Element? fixedCanonicalElement, FhirCode? fixedCode, @JsonKey(name: '_fixedCode') Element? fixedCodeElement, FhirDate? fixedDate, @JsonKey(name: '_fixedDate') Element? fixedDateElement, FhirDateTime? fixedDateTime, @JsonKey(name: '_fixedDateTime') Element? fixedDateTimeElement, FhirDecimal? fixedDecimal, @JsonKey(name: '_fixedDecimal') Element? fixedDecimalElement, FhirId? fixedId, @JsonKey(name: '_fixedId') Element? fixedIdElement, FhirInstant? fixedInstant, @JsonKey(name: '_fixedInstant') Element? fixedInstantElement, FhirInteger? fixedInteger, @JsonKey(name: '_fixedInteger') Element? fixedIntegerElement, FhirMarkdown? fixedMarkdown, @JsonKey(name: '_fixedMarkdown') Element? fixedMarkdownElement, FhirOid? fixedOid, @JsonKey(name: '_fixedOid') Element? fixedOidElement, FhirPositiveInt? fixedPositiveInt, @JsonKey(name: '_fixedPositiveInt') Element? fixedPositiveIntElement, String? fixedString, @JsonKey(name: '_fixedString') Element? fixedStringElement, FhirTime? fixedTime, @JsonKey(name: '_fixedTime') Element? fixedTimeElement, FhirUnsignedInt? fixedUnsignedInt, @JsonKey(name: '_fixedUnsignedInt') Element? fixedUnsignedIntElement, FhirUri? fixedUri, @JsonKey(name: '_fixedUri') Element? fixedUriElement, FhirUrl? fixedUrl, @JsonKey(name: '_fixedUrl') Element? fixedUrlElement, FhirUuid? fixedUuid, @JsonKey(name: '_fixedUuid') Element? fixedUuidElement, Address? fixedAddress, Age? fixedAge, Annotation? fixedAnnotation, Attachment? fixedAttachment, CodeableConcept? fixedCodeableConcept, CodeableReference? fixedCodeableReference, Coding? fixedCoding, ContactPoint? fixedContactPoint, Count? fixedCount, Distance? fixedDistance, FhirDuration? fixedDuration, HumanName? fixedHumanName, Identifier? fixedIdentifier, Money? fixedMoney, Period? fixedPeriod, Quantity? fixedQuantity, Range? fixedRange, Ratio? fixedRatio, RatioRange? fixedRatioRange, Reference? fixedReference, SampledData? fixedSampledData, Signature? fixedSignature, Timing? fixedTiming, ContactDetail? fixedContactDetail, Contributor? fixedContributor, DataRequirement? fixedDataRequirement, FhirExpression? fixedExpression, ParameterDefinition? fixedParameterDefinition, RelatedArtifact? fixedRelatedArtifact, TriggerDefinition? fixedTriggerDefinition, UsageContext? fixedUsageContext, Dosage? fixedDosage, FhirBase64Binary? patternBase64Binary, @JsonKey(name: '_patternBase64Binary') Element? patternBase64BinaryElement, FhirBoolean? patternBoolean, @JsonKey(name: '_patternBoolean') Element? patternBooleanElement, FhirCanonical? patternCanonical, @JsonKey(name: '_patternCanonical') Element? patternCanonicalElement, FhirCode? patternCode, @JsonKey(name: '_patternCode') Element? patternCodeElement, FhirDate? patternDate, @JsonKey(name: '_patternDate') Element? patternDateElement, FhirDateTime? patternDateTime, @JsonKey(name: '_patternDateTime') Element? patternDateTimeElement, FhirDecimal? patternDecimal, @JsonKey(name: '_patternDecimal') Element? patternDecimalElement, FhirId? patternId, @JsonKey(name: '_patternId') Element? patternIdElement, FhirInstant? patternInstant, @JsonKey(name: '_patternInstant') Element? patternInstantElement, FhirInteger? patternInteger, @JsonKey(name: '_patternInteger') Element? patternIntegerElement, FhirMarkdown? patternMarkdown, @JsonKey(name: '_patternMarkdown') Element? patternMarkdownElement, FhirOid? patternOid, @JsonKey(name: '_patternOid') Element? patternOidElement, FhirPositiveInt? patternPositiveInt, @JsonKey(name: '_patternPositiveInt') Element? patternPositiveIntElement, String? patternString, @JsonKey(name: '_patternString') Element? patternStringElement, FhirTime? patternTime, @JsonKey(name: '_patternTime') Element? patternTimeElement, FhirUnsignedInt? patternUnsignedInt, @JsonKey(name: '_patternUnsignedInt') Element? patternUnsignedIntElement, FhirUri? patternUri, @JsonKey(name: '_patternUri') Element? patternUriElement, FhirUrl? patternUrl, @JsonKey(name: '_patternUrl') Element? patternUrlElement, FhirUuid? patternUuid, @JsonKey(name: '_patternUuid') Element? patternUuidElement, Address? patternAddress, Age? patternAge, Annotation? patternAnnotation, Attachment? patternAttachment, CodeableConcept? patternCodeableConcept, CodeableReference? patternCodeableReference, Coding? patternCoding, ContactPoint? patternContactPoint, Count? patternCount, Distance? patternDistance, FhirDuration? patternDuration, HumanName? patternHumanName, Identifier? patternIdentifier, Money? patternMoney, Period? patternPeriod, Quantity? patternQuantity, Range? patternRange, Ratio? patternRatio, RatioRange? patternRatioRange, Reference? patternReference, SampledData? patternSampledData, Signature? patternSignature, Timing? patternTiming, ContactDetail? patternContactDetail, Contributor? patternContributor, DataRequirement? patternDataRequirement, FhirExpression? patternExpression, ParameterDefinition? patternParameterDefinition, RelatedArtifact? patternRelatedArtifact, TriggerDefinition? patternTriggerDefinition, UsageContext? patternUsageContext, Dosage? patternDosage, List<ElementDefinitionExample>? example, FhirDate? minValueDate, @JsonKey(name: '_minValueDate') Element? minValueDateElement, FhirDateTime? minValueDateTime, @JsonKey(name: '_minValueDateTime') Element? minValueDateTimeElement, FhirInstant? minValueInstant, @JsonKey(name: '_minValueInstant') Element? minValueInstantElement, FhirTime? minValueTime, @JsonKey(name: '_minValueTime') Element? minValueTimeElement, FhirDecimal? minValueDecimal, @JsonKey(name: '_minValueDecimal') Element? minValueDecimalElement, FhirInteger? minValueInteger, @JsonKey(name: '_minValueInteger') Element? minValueIntegerElement, FhirPositiveInt? minValuePositiveInt, @JsonKey(name: '_minValuePositiveInt') Element? minValuePositiveIntElement, FhirUnsignedInt? minValueUnsignedInt, @JsonKey(name: '_minValueUnsignedInt') Element? minValueUnsignedIntElement, Quantity? minValueQuantity, FhirDate? maxValueDate, @JsonKey(name: '_maxValueDate') Element? maxValueDateElement, FhirDateTime? maxValueDateTime, @JsonKey(name: '_maxValueDateTime') Element? maxValueDateTimeElement, FhirInstant? maxValueInstant, @JsonKey(name: '_maxValueInstant') Element? maxValueInstantElement, FhirTime? maxValueTime, @JsonKey(name: '_maxValueTime') Element? maxValueTimeElement, FhirDecimal? maxValueDecimal, @JsonKey(name: '_maxValueDecimal') Element? maxValueDecimalElement, FhirInteger? maxValueInteger, @JsonKey(name: '_maxValueInteger') Element? maxValueIntegerElement, FhirPositiveInt? maxValuePositiveInt, @JsonKey(name: '_maxValuePositiveInt') Element? maxValuePositiveIntElement, FhirUnsignedInt? maxValueUnsignedInt, @JsonKey(name: '_maxValueUnsignedInt') Element? maxValueUnsignedIntElement, Quantity? maxValueQuantity, FhirInteger? maxLength, @JsonKey(name: '_maxLength') Element? maxLengthElement, List<FhirId>? condition, @JsonKey(name: '_condition') List<Element?>? conditionElement, List<ElementDefinitionConstraint>? constraint, FhirBoolean? mustSupport, @JsonKey(name: '_mustSupport') Element? mustSupportElement, FhirBoolean? isModifier, @JsonKey(name: '_isModifier') Element? isModifierElement, String? isModifierReason, @JsonKey(name: '_isModifierReason') Element? isModifierReasonElement, FhirBoolean? isSummary, @JsonKey(name: '_isSummary') Element? isSummaryElement, ElementDefinitionBinding? binding, List<ElementDefinitionMapping>? mapping, })

ElementDefinition Captures constraints on each element within the resource, profile, or extension.

id Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

extension_ May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

modifierExtension May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

path The path identifies the element and is expressed as a "."-separated list of ancestor elements, beginning with the name of the resource or extension.

pathElement Extensions for path

representation Codes that define how this element is represented in instances, when the deviation varies from the normal case.

representationElement Extensions for representation

sliceName The name of this element definition slice, when slicing is working. The name must be a token with no dots or spaces. This is a unique name referring to a specific set of constraints applied to this element, used to provide a name to different slices of the same element.

sliceNameElement Extensions for sliceName

sliceIsConstraining If true, indicates that this slice definition is constraining a slice definition with the same name in an inherited profile. If false, the slice is not overriding any slice in an inherited profile. If missing, the slice might or might not be overriding a slice in an inherited profile, depending on the sliceName.

sliceIsConstrainingElement Extensions for sliceIsConstraining

label A single preferred label which is the text to display beside the element indicating its meaning or to use to prompt for the element in a user display or form.

labelElement Extensions for label

code A code that has the same meaning as the element in a particular terminology.

slicing Indicates that the element is sliced into a set of alternative definitions (i.e. in a structure definition, there are multiple different constraints on a single element in the base resource). Slicing can be used in any resource that has cardinality ..* on the base resource, or any resource with a choice of types. The set of slices is any elements that come after this in the element sequence that have the same path, until a shorter path occurs (the shorter path terminates the set).

short A concise description of what this element means (e.g. for use in autogenerated summaries).

shortElement Extensions for short

definition Provides a complete explanation of the meaning of the data element for human readability. For the case of elements derived from existing elements (e.g. constraints), the definition SHALL be consistent with the base definition, but convey the meaning of the element in the particular context of use of the resource. (Note: The text you are reading is specified in ElementDefinition.definition).

definitionElement Extensions for definition

comment Explanatory notes and implementation guidance about the data element, including notes about how to use the data properly, exceptions to proper use, etc. (Note: The text you are reading is specified in ElementDefinition.comment).

commentElement Extensions for comment

requirements This element is for traceability of why the element was created and why the constraints exist as they do. This may be used to point to source materials or specifications that drove the structure of this element.

requirementsElement Extensions for requirements

alias Identifies additional names by which this element might also be known.

aliasElement Extensions for alias

min The minimum number of times this element SHALL appear in the instance.

minElement Extensions for min

max The maximum number of times this element is permitted to appear in the instance.

maxElement Extensions for max

base Information about the base definition of the element, provided to make it unnecessary for tools to trace the deviation of the element through the derived and related profiles. When the element definition is not the original definition of an element - i.g. either in a constraint on another type, or for elements from a super type in a snap shot - then the information in provided in the element definition may be different to the base definition. On the original definition of the element, it will be same.

contentReference Identifies an element defined elsewhere in the definition whose content rules should be applied to the current element. ContentReferences bring across all the rules that are in the ElementDefinition for the element, including definitions, cardinality constraints, bindings, invariants etc.

contentReferenceElement Extensions for contentReference

type The data type or resource that the value of this element is permitted to be.

defaultValueBase64Binary The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueBase64BinaryElement Extensions for defaultValueBase64Binary

defaultValueBoolean The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueBooleanElement Extensions for defaultValueBoolean

defaultValueCanonical The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueCanonicalElement Extensions for defaultValueCanonical

defaultValueCode The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueCodeElement Extensions for defaultValueCode

defaultValueDate The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueDateElement Extensions for defaultValueDate

defaultValueDateTime The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueDateTimeElement Extensions for defaultValueDateTime

defaultValueDecimal The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueDecimalElement Extensions for defaultValueDecimal

defaultValueId The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueIdElement Extensions for defaultValueId

defaultValueInstant The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueInstantElement Extensions for defaultValueInstant

defaultValueInteger The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueIntegerElement Extensions for defaultValueInteger

defaultValueMarkdown The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueMarkdownElement Extensions for defaultValueMarkdown

defaultValueOid The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueOidElement Extensions for defaultValueOid

defaultValuePositiveInt The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValuePositiveIntElement Extensions for defaultValuePositiveInt

defaultValueString The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueStringElement Extensions for defaultValueString

defaultValueTime The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueTimeElement Extensions for defaultValueTime

defaultValueUnsignedInt The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueUnsignedIntElement Extensions for defaultValueUnsignedInt

defaultValueUri The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueUriElement Extensions for defaultValueUri

defaultValueUrl The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueUrlElement Extensions for defaultValueUrl

defaultValueUuid The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueUuidElement Extensions for defaultValueUuid

defaultValueAddress The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueAge The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueAnnotation The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueAttachment The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueCodeableConcept The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueCoding The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueContactPoint The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueCount The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueDistance The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueDuration The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueHumanName The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueIdentifier The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueMoney The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValuePeriod The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueQuantity The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueRange The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueRatio The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueReference The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueSampledData The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueSignature The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueTiming The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueContactDetail The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueContributor The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueDataRequirement The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueExpression The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueParameterDefinition The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueRelatedArtifact The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueTriggerDefinition The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueUsageContext The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

defaultValueDosage The value that should be used if there is no value stated in the instance (e.g. 'if not otherwise specified, the abstract is false').

meaningWhenMissing The Implicit meaning that is to be understood when this element is missing (e.g. 'when this element is missing, the period is ongoing').

meaningWhenMissingElement Extensions for meaningWhenMissing

orderMeaning If present, indicates that the order of the repeating element has meaning and describes what that meaning is. If absent, it means that the order of the element has no meaning.

orderMeaningElement Extensions for orderMeaning

fixedBase64Binary Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedBase64BinaryElement Extensions for fixedBase64Binary

fixedBoolean Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedBooleanElement Extensions for fixedBoolean

fixedCanonical Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedCanonicalElement Extensions for fixedCanonical

fixedCode Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedCodeElement Extensions for fixedCode

fixedDate Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedDateElement Extensions for fixedDate

fixedDateTime Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedDateTimeElement Extensions for fixedDateTime

fixedDecimal Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedDecimalElement Extensions for fixedDecimal

fixedId Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedIdElement Extensions for fixedId

fixedInstant Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedInstantElement Extensions for fixedInstant

fixedInteger Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedIntegerElement Extensions for fixedInteger

fixedMarkdown Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedMarkdownElement Extensions for fixedMarkdown

fixedOid Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedOidElement Extensions for fixedOid

fixedPositiveInt Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedPositiveIntElement Extensions for fixedPositiveInt

fixedString Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedStringElement Extensions for fixedString

fixedTime Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedTimeElement Extensions for fixedTime

fixedUnsignedInt Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedUnsignedIntElement Extensions for fixedUnsignedInt

fixedUri Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedUriElement Extensions for fixedUri

fixedUrl Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedUrlElement Extensions for fixedUrl

fixedUuid Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedUuidElement Extensions for fixedUuid

fixedAddress Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedAge Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedAnnotation Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedAttachment Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedCodeableConcept Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedCoding Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedContactPoint Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedCount Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedDistance Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedDuration Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedHumanName Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedIdentifier Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedMoney Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedPeriod Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedQuantity Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedRange Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedRatio Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedReference Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedSampledData Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedSignature Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedTiming Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedContactDetail Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedContributor Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedDataRequirement Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedExpression Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedParameterDefinition Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedRelatedArtifact Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedTriggerDefinition Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedUsageContext Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

fixedDosage Specifies a value that SHALL be exactly the value for this element in the instance. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing.

patternBase64Binary Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternBase64BinaryElement Extensions for patternBase64Binary

patternBoolean Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternBooleanElement Extensions for patternBoolean

patternCanonical Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternCanonicalElement Extensions for patternCanonical

patternCode Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternCodeElement Extensions for patternCode

patternDate Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternDateElement Extensions for patternDate

patternDateTime Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternDateTimeElement Extensions for patternDateTime

patternDecimal Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternDecimalElement Extensions for patternDecimal

patternId Specifies a value that the value in the instance SHALL follow

• that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternIdElement Extensions for patternId

patternInstant Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternInstantElement Extensions for patternInstant

patternInteger Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternIntegerElement Extensions for patternInteger

patternMarkdown Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternMarkdownElement Extensions for patternMarkdown

patternOid Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternOidElement Extensions for patternOid

patternPositiveInt Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternPositiveIntElement Extensions for patternPositiveInt

patternString Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternStringElement Extensions for patternString

patternTime Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternTimeElement Extensions for patternTime

patternUnsignedInt Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternUnsignedIntElement Extensions for patternUnsignedInt

patternUri Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternUriElement Extensions for patternUri

patternUrl Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternUrlElement Extensions for patternUrl

patternUuid Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternUuidElement Extensions for patternUuid

patternAddress Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternAge Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternAnnotation Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternAttachment Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternCodeableConcept Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternCoding Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternContactPoint Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternCount Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternDistance Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternDuration Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternHumanName Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternIdentifier Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternMoney Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternPeriod Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternQuantity Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternRange Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternRatio Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternReference Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternSampledData Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternSignature Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternTiming Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternContactDetail Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternContributor Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternDataRequirement Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternExpression Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternParameterDefinition Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternRelatedArtifact Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternTriggerDefinition Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternUsageContext Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

patternDosage Specifies a value that the value in the instance SHALL follow - that is, any value in the pattern must be found in the instance. Other additional values may be found too. This is effectively constraint by example. When patternx is used to constrain a primitive, it means that the value provided in the patternx must match the instance value exactly. When patternx is used to constrain an array, it means that each element provided in the patternx array must (recursively) match at least one element from the instance array. When patternx is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,

1. If primitive: it must match exactly the pattern value
2. If a complex object: it must match (recursively) the pattern value
3. If an array: it must match (recursively) the pattern value.

example A sample value for this element demonstrating the type of information that would typically be found in the element.

minValueDate The minimum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

minValueDateElement Extensions for minValueDate

minValueDateTime The minimum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

minValueDateTimeElement Extensions for minValueDateTime

minValueInstant The minimum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

minValueInstantElement Extensions for minValueInstant

minValueTime The minimum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

minValueTimeElement Extensions for minValueTime

minValueDecimal The minimum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

minValueDecimalElement Extensions for minValueDecimal

minValueInteger The minimum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

minValueIntegerElement Extensions for minValueInteger

minValuePositiveInt The minimum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

minValuePositiveIntElement Extensions for minValuePositiveInt

minValueUnsignedInt The minimum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

minValueUnsignedIntElement Extensions for minValueUnsignedInt

minValueQuantity The minimum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

maxValueDate The maximum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

maxValueDateElement Extensions for maxValueDate

maxValueDateTime The maximum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

maxValueDateTimeElement Extensions for maxValueDateTime

maxValueInstant The maximum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

maxValueInstantElement Extensions for maxValueInstant

maxValueTime The maximum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

maxValueTimeElement Extensions for maxValueTime

maxValueDecimal The maximum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

maxValueDecimalElement Extensions for maxValueDecimal

maxValueInteger The maximum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

maxValueIntegerElement Extensions for maxValueInteger

maxValuePositiveInt The maximum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

maxValuePositiveIntElement Extensions for maxValuePositiveInt

maxValueUnsignedInt The maximum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

maxValueUnsignedIntElement Extensions for maxValueUnsignedInt

maxValueQuantity The maximum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity.

maxLength Indicates the maximum length in characters that is permitted to be present in conformant instances and which is expected to be supported by conformant consumers that support the element.

maxLengthElement Extensions for maxLength

condition A reference to an invariant that may make additional statements about the cardinality or value in the instance.

conditionElement Extensions for condition

constraint Formal constraints such as co-occurrence and other constraints that can be computationally evaluated within the context of the instance.

mustSupport If true, implementations that produce or consume resources SHALL provide "support" for the element in some meaningful way. If false, the element may be ignored and not supported. If false, whether to populate or use the data element in any way is at the discretion of the implementation.

mustSupportElement Extensions for mustSupport

isModifier If true, the value of this element affects the interpretation of the element or resource that contains it, and the value of the element cannot be ignored. Typically, this is used for status, negation and qualification codes. The effect of this is that the element cannot be ignored by systems: they SHALL either recognize the element and process it, and/or a pre-determination has been made that it is not relevant to their particular system.

isModifierElement Extensions for isModifier

isModifierReason Explains how that element affects the interpretation of the resource or element that contains it.

isModifierReasonElement Extensions for isModifierReason

isSummary Whether the element should be included if a client requests a search with the parameter _summary=true.

isSummaryElement Extensions for isSummary

binding Binds to a value set if this element is coded (code, Coding, CodeableConcept, Quantity), or the data types (string, uri).

mapping Identifies a concept from an external specification that roughly corresponds to this element.

Implementation

const factory ElementDefinition({
  /// [id] Unique id for the element within a resource (for internal
  ///  references). This may be any string value that does not contain spaces.
  @JsonKey(name: 'id') String? fhirId,

  /// [extension_] May be used to represent additional information that is not
  /// part of the basic definition of the element. To make the use of extensions
  /// safe and manageable, there is a strict set of governance  applied to the
  /// definition and use of extensions. Though any implementer can define an
  /// extension, there is a set of requirements that SHALL be met as part of the
  ///  definition of the extension.
  @JsonKey(name: 'extension') List<FhirExtension>? extension_,

  /// [modifierExtension] May be used to represent additional information that
  /// is not part of the basic definition of the element and that modifies the
  /// understanding of the element in which it is contained and/or the
  /// understanding of the containing element's descendants. Usually modifier
  /// elements provide negation or qualification. To make the use of extensions
  /// safe and manageable, there is a strict set of governance applied to the
  /// definition and use of extensions. Though any implementer can define an
  /// extension, there is a set of requirements that SHALL be met as part of the
  /// definition of the extension. Applications processing a resource are
  ///  required to check for modifier extensions.
  /// Modifier extensions SHALL NOT change the meaning of any elements on
  /// Resource or DomainResource (including cannot change the meaning of
  ///  modifierExtension itself).
  List<FhirExtension>? modifierExtension,

  /// [path] The path identifies the element and is expressed as a
  /// "."-separated list of ancestor elements, beginning with the name of the
  ///  resource or extension.
  String? path,

  /// [pathElement] Extensions for path
  @JsonKey(name: '_path') Element? pathElement,

  /// [representation] Codes that define how this element is represented in
  ///  instances, when the deviation varies from the normal case.
  List<ElementDefinitionRepresentation>? representation,

  /// [representationElement] Extensions for representation
  @JsonKey(name: '_representation') List<Element?>? representationElement,

  /// [sliceName] The name of this element definition slice, when slicing is
  /// working. The name must be a token with no dots or spaces. This is a unique
  /// name referring to a specific set of constraints applied to this element,
  ///  used to provide a name to different slices of the same element.
  String? sliceName,

  /// [sliceNameElement] Extensions for sliceName
  @JsonKey(name: '_sliceName') Element? sliceNameElement,

  /// [sliceIsConstraining] If true, indicates that this slice definition is
  /// constraining a slice definition with the same name in an inherited
  /// profile. If false, the slice is not overriding any slice in an inherited
  /// profile. If missing, the slice might or might not be overriding a slice in
  ///  an inherited profile, depending on the sliceName.
  FhirBoolean? sliceIsConstraining,

  /// [sliceIsConstrainingElement] Extensions for sliceIsConstraining
  @JsonKey(name: '_sliceIsConstraining') Element? sliceIsConstrainingElement,

  /// [label] A single preferred label which is the text to display beside the
  /// element indicating its meaning or to use to prompt for the element in a
  ///  user display or form.
  String? label,

  /// [labelElement] Extensions for label
  @JsonKey(name: '_label') Element? labelElement,

  /// [code] A code that has the same meaning as the element in a particular
  ///  terminology.
  List<Coding>? code,

  /// [slicing] Indicates that the element is sliced into a set of alternative
  /// definitions (i.e. in a structure definition, there are multiple different
  /// constraints on a single element in the base resource). Slicing can be used
  /// in any resource that has cardinality ..* on the base resource, or any
  /// resource with a choice of types. The set of slices is any elements that
  /// come after this in the element sequence that have the same path, until a
  ///  shorter path occurs (the shorter path terminates the set).
  ElementDefinitionSlicing? slicing,

  /// [short] A concise description of what this element means (e.g. for use in
  ///  autogenerated summaries).
  String? short,

  /// [shortElement] Extensions for short
  @JsonKey(name: '_short') Element? shortElement,

  /// [definition] Provides a complete explanation of the meaning of the data
  /// element for human readability.  For the case of elements derived from
  /// existing elements (e.g. constraints), the definition SHALL be consistent
  /// with the base definition, but convey the meaning of the element in the
  /// particular context of use of the resource. (Note: The text you are reading
  ///  is specified in ElementDefinition.definition).
  FhirMarkdown? definition,

  /// [definitionElement] Extensions for definition
  @JsonKey(name: '_definition') Element? definitionElement,

  /// [comment] Explanatory notes and implementation guidance about the data
  /// element, including notes about how to use the data properly, exceptions to
  /// proper use, etc. (Note: The text you are reading is specified in
  ///  ElementDefinition.comment).
  FhirMarkdown? comment,

  /// [commentElement] Extensions for comment
  @JsonKey(name: '_comment') Element? commentElement,

  /// [requirements] This element is for traceability of why the element was
  /// created and why the constraints exist as they do. This may be used to
  /// point to source materials or specifications that drove the structure of
  ///  this element.
  FhirMarkdown? requirements,

  /// [requirementsElement] Extensions for requirements
  @JsonKey(name: '_requirements') Element? requirementsElement,

  /// [alias] Identifies additional names by which this element might also be
  ///  known.
  List<String>? alias,

  /// [aliasElement] Extensions for alias
  @JsonKey(name: '_alias') List<Element?>? aliasElement,

  /// [min] The minimum number of times this element SHALL appear in the
  ///  instance.
  FhirUnsignedInt? min,

  /// [minElement] Extensions for min
  @JsonKey(name: '_min') Element? minElement,

  /// [max] The maximum number of times this element is permitted to appear in
  ///  the instance.
  String? max,

  /// [maxElement] Extensions for max
  @JsonKey(name: '_max') Element? maxElement,

  /// [base] Information about the base definition of the element, provided to
  /// make it unnecessary for tools to trace the deviation of the element
  /// through the derived and related profiles. When the element definition is
  /// not the original definition of an element - i.g. either in a constraint on
  /// another type, or for elements from a super type in a snap shot - then the
  /// information in provided in the element definition may be different to the
  /// base definition. On the original definition of the element, it will be
  ///  same.
  ElementDefinitionBase? base,

  /// [contentReference] Identifies an element defined elsewhere in the
  /// definition whose content rules should be applied to the current element.
  /// ContentReferences bring across all the rules that are in the
  /// ElementDefinition for the element, including definitions, cardinality
  ///  constraints, bindings, invariants etc.
  FhirUri? contentReference,

  /// [contentReferenceElement] Extensions for contentReference
  @JsonKey(name: '_contentReference') Element? contentReferenceElement,

  /// [type] The data type or resource that the value of this element is
  ///  permitted to be.
  List<ElementDefinitionType>? type,

  /// [defaultValueBase64Binary] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  FhirBase64Binary? defaultValueBase64Binary,
  @JsonKey(name: '_defaultValueBase64Binary')

  /// [defaultValueBase64BinaryElement] Extensions for defaultValueBase64Binary
  Element? defaultValueBase64BinaryElement,

  /// [defaultValueBoolean] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirBoolean? defaultValueBoolean,

  /// [defaultValueBooleanElement] Extensions for defaultValueBoolean
  @JsonKey(name: '_defaultValueBoolean') Element? defaultValueBooleanElement,

  /// [defaultValueCanonical] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  FhirCanonical? defaultValueCanonical,
  @JsonKey(name: '_defaultValueCanonical')

  /// [defaultValueCanonicalElement] Extensions for defaultValueCanonical
  Element? defaultValueCanonicalElement,

  /// [defaultValueCode] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirCode? defaultValueCode,

  /// [defaultValueCodeElement] Extensions for defaultValueCode
  @JsonKey(name: '_defaultValueCode') Element? defaultValueCodeElement,

  /// [defaultValueDate] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirDate? defaultValueDate,

  /// [defaultValueDateElement] Extensions for defaultValueDate
  @JsonKey(name: '_defaultValueDate') Element? defaultValueDateElement,

  /// [defaultValueDateTime] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirDateTime? defaultValueDateTime,
  @JsonKey(name: '_defaultValueDateTime')

  /// [defaultValueDateTimeElement] Extensions for defaultValueDateTime
  Element? defaultValueDateTimeElement,

  /// [defaultValueDecimal] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirDecimal? defaultValueDecimal,

  /// [defaultValueDecimalElement] Extensions for defaultValueDecimal
  @JsonKey(name: '_defaultValueDecimal') Element? defaultValueDecimalElement,

  /// [defaultValueId] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirId? defaultValueId,

  /// [defaultValueIdElement] Extensions for defaultValueId
  @JsonKey(name: '_defaultValueId') Element? defaultValueIdElement,

  /// [defaultValueInstant] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirInstant? defaultValueInstant,

  /// [defaultValueInstantElement] Extensions for defaultValueInstant
  @JsonKey(name: '_defaultValueInstant') Element? defaultValueInstantElement,

  /// [defaultValueInteger] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirInteger? defaultValueInteger,

  /// [defaultValueIntegerElement] Extensions for defaultValueInteger
  @JsonKey(name: '_defaultValueInteger') Element? defaultValueIntegerElement,

  /// [defaultValueMarkdown] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirMarkdown? defaultValueMarkdown,
  @JsonKey(name: '_defaultValueMarkdown')

  /// [defaultValueMarkdownElement] Extensions for defaultValueMarkdown
  Element? defaultValueMarkdownElement,

  /// [defaultValueOid] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirOid? defaultValueOid,

  /// [defaultValueOidElement] Extensions for defaultValueOid
  @JsonKey(name: '_defaultValueOid') Element? defaultValueOidElement,

  /// [defaultValuePositiveInt] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  FhirPositiveInt? defaultValuePositiveInt,
  @JsonKey(name: '_defaultValuePositiveInt')

  /// [defaultValuePositiveIntElement] Extensions for defaultValuePositiveInt
  Element? defaultValuePositiveIntElement,

  /// [defaultValueString] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  String? defaultValueString,

  /// [defaultValueStringElement] Extensions for defaultValueString
  @JsonKey(name: '_defaultValueString') Element? defaultValueStringElement,

  /// [defaultValueTime] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirTime? defaultValueTime,

  /// [defaultValueTimeElement] Extensions for defaultValueTime
  @JsonKey(name: '_defaultValueTime') Element? defaultValueTimeElement,

  /// [defaultValueUnsignedInt] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  FhirUnsignedInt? defaultValueUnsignedInt,
  @JsonKey(name: '_defaultValueUnsignedInt')

  /// [defaultValueUnsignedIntElement] Extensions for defaultValueUnsignedInt
  Element? defaultValueUnsignedIntElement,

  /// [defaultValueUri] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirUri? defaultValueUri,

  /// [defaultValueUriElement] Extensions for defaultValueUri
  @JsonKey(name: '_defaultValueUri') Element? defaultValueUriElement,

  /// [defaultValueUrl] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirUrl? defaultValueUrl,

  /// [defaultValueUrlElement] Extensions for defaultValueUrl
  @JsonKey(name: '_defaultValueUrl') Element? defaultValueUrlElement,

  /// [defaultValueUuid] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirUuid? defaultValueUuid,

  /// [defaultValueUuidElement] Extensions for defaultValueUuid
  @JsonKey(name: '_defaultValueUuid') Element? defaultValueUuidElement,

  /// [defaultValueAddress] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Address? defaultValueAddress,

  /// [defaultValueAge] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Age? defaultValueAge,

  /// [defaultValueAnnotation] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  Annotation? defaultValueAnnotation,

  /// [defaultValueAttachment] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  Attachment? defaultValueAttachment,

  /// [defaultValueCodeableConcept] The value that should be used if there is
  /// no value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  CodeableConcept? defaultValueCodeableConcept,
  CodeableReference? defaultValueCodeableReference,

  /// [defaultValueCoding] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Coding? defaultValueCoding,

  /// [defaultValueContactPoint] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  ContactPoint? defaultValueContactPoint,

  /// [defaultValueCount] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Count? defaultValueCount,

  /// [defaultValueDistance] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Distance? defaultValueDistance,

  /// [defaultValueDuration] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  FhirDuration? defaultValueDuration,

  /// [defaultValueHumanName] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  HumanName? defaultValueHumanName,

  /// [defaultValueIdentifier] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  Identifier? defaultValueIdentifier,

  /// [defaultValueMoney] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Money? defaultValueMoney,

  /// [defaultValuePeriod] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Period? defaultValuePeriod,

  /// [defaultValueQuantity] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Quantity? defaultValueQuantity,

  /// [defaultValueRange] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Range? defaultValueRange,

  /// [defaultValueRatio] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Ratio? defaultValueRatio,
  RatioRange? defaultValueRatioRange,

  /// [defaultValueReference] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  Reference? defaultValueReference,

  /// [defaultValueSampledData] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  SampledData? defaultValueSampledData,

  /// [defaultValueSignature] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  Signature? defaultValueSignature,

  /// [defaultValueTiming] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Timing? defaultValueTiming,

  /// [defaultValueContactDetail] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  ContactDetail? defaultValueContactDetail,

  /// [defaultValueContributor] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  Contributor? defaultValueContributor,

  /// [defaultValueDataRequirement] The value that should be used if there is
  /// no value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  DataRequirement? defaultValueDataRequirement,

  /// [defaultValueExpression] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  FhirExpression? defaultValueExpression,

  /// [defaultValueParameterDefinition] The value that should be used if there
  /// is no value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  ParameterDefinition? defaultValueParameterDefinition,

  /// [defaultValueRelatedArtifact] The value that should be used if there is
  /// no value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  RelatedArtifact? defaultValueRelatedArtifact,

  /// [defaultValueTriggerDefinition] The value that should be used if there is
  /// no value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  TriggerDefinition? defaultValueTriggerDefinition,

  /// [defaultValueUsageContext] The value that should be used if there is no
  /// value stated in the instance (e.g. 'if not otherwise specified, the
  ///  abstract is false').
  UsageContext? defaultValueUsageContext,

  /// [defaultValueDosage] The value that should be used if there is no value
  /// stated in the instance (e.g. 'if not otherwise specified, the abstract is
  ///  false').
  Dosage? defaultValueDosage,

  /// [meaningWhenMissing] The Implicit meaning that is to be understood when
  /// this element is missing (e.g. 'when this element is missing, the period is
  ///  ongoing').
  FhirMarkdown? meaningWhenMissing,

  /// [meaningWhenMissingElement] Extensions for meaningWhenMissing
  @JsonKey(name: '_meaningWhenMissing') Element? meaningWhenMissingElement,

  /// [orderMeaning] If present, indicates that the order of the repeating
  /// element has meaning and describes what that meaning is.  If absent, it
  ///  means that the order of the element has no meaning.
  String? orderMeaning,

  /// [orderMeaningElement] Extensions for orderMeaning
  @JsonKey(name: '_orderMeaning') Element? orderMeaningElement,

  /// [fixedBase64Binary] Specifies a value that SHALL be exactly the value
  /// for this element in the instance. For purposes of comparison,
  /// non-significant whitespace is ignored, and all values must be an exact
  /// match (case and accent sensitive). Missing elements/attributes must also
  ///  be missing.
  FhirBase64Binary? fixedBase64Binary,

  /// [fixedBase64BinaryElement] Extensions for fixedBase64Binary
  @JsonKey(name: '_fixedBase64Binary') Element? fixedBase64BinaryElement,

  /// [fixedBoolean] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirBoolean? fixedBoolean,

  /// [fixedBooleanElement] Extensions for fixedBoolean
  @JsonKey(name: '_fixedBoolean') Element? fixedBooleanElement,

  /// [fixedCanonical] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirCanonical? fixedCanonical,

  /// [fixedCanonicalElement] Extensions for fixedCanonical
  @JsonKey(name: '_fixedCanonical') Element? fixedCanonicalElement,

  /// [fixedCode] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirCode? fixedCode,

  /// [fixedCodeElement] Extensions for fixedCode
  @JsonKey(name: '_fixedCode') Element? fixedCodeElement,

  /// [fixedDate] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirDate? fixedDate,

  /// [fixedDateElement] Extensions for fixedDate
  @JsonKey(name: '_fixedDate') Element? fixedDateElement,

  /// [fixedDateTime] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirDateTime? fixedDateTime,

  /// [fixedDateTimeElement] Extensions for fixedDateTime
  @JsonKey(name: '_fixedDateTime') Element? fixedDateTimeElement,

  /// [fixedDecimal] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirDecimal? fixedDecimal,

  /// [fixedDecimalElement] Extensions for fixedDecimal
  @JsonKey(name: '_fixedDecimal') Element? fixedDecimalElement,

  /// [fixedId] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirId? fixedId,

  /// [fixedIdElement] Extensions for fixedId
  @JsonKey(name: '_fixedId') Element? fixedIdElement,

  /// [fixedInstant] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirInstant? fixedInstant,

  /// [fixedInstantElement] Extensions for fixedInstant
  @JsonKey(name: '_fixedInstant') Element? fixedInstantElement,

  /// [fixedInteger] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirInteger? fixedInteger,

  /// [fixedIntegerElement] Extensions for fixedInteger
  @JsonKey(name: '_fixedInteger') Element? fixedIntegerElement,

  /// [fixedMarkdown] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirMarkdown? fixedMarkdown,

  /// [fixedMarkdownElement] Extensions for fixedMarkdown
  @JsonKey(name: '_fixedMarkdown') Element? fixedMarkdownElement,

  /// [fixedOid] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirOid? fixedOid,

  /// [fixedOidElement] Extensions for fixedOid
  @JsonKey(name: '_fixedOid') Element? fixedOidElement,

  /// [fixedPositiveInt] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirPositiveInt? fixedPositiveInt,

  /// [fixedPositiveIntElement] Extensions for fixedPositiveInt
  @JsonKey(name: '_fixedPositiveInt') Element? fixedPositiveIntElement,

  /// [fixedString] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  String? fixedString,

  /// [fixedStringElement] Extensions for fixedString
  @JsonKey(name: '_fixedString') Element? fixedStringElement,

  /// [fixedTime] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirTime? fixedTime,

  /// [fixedTimeElement] Extensions for fixedTime
  @JsonKey(name: '_fixedTime') Element? fixedTimeElement,

  /// [fixedUnsignedInt] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirUnsignedInt? fixedUnsignedInt,

  /// [fixedUnsignedIntElement] Extensions for fixedUnsignedInt
  @JsonKey(name: '_fixedUnsignedInt') Element? fixedUnsignedIntElement,

  /// [fixedUri] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirUri? fixedUri,

  /// [fixedUriElement] Extensions for fixedUri
  @JsonKey(name: '_fixedUri') Element? fixedUriElement,

  /// [fixedUrl] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirUrl? fixedUrl,

  /// [fixedUrlElement] Extensions for fixedUrl
  @JsonKey(name: '_fixedUrl') Element? fixedUrlElement,

  /// [fixedUuid] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirUuid? fixedUuid,

  /// [fixedUuidElement] Extensions for fixedUuid
  @JsonKey(name: '_fixedUuid') Element? fixedUuidElement,

  /// [fixedAddress] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Address? fixedAddress,

  /// [fixedAge] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Age? fixedAge,

  /// [fixedAnnotation] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Annotation? fixedAnnotation,

  /// [fixedAttachment] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Attachment? fixedAttachment,

  /// [fixedCodeableConcept] Specifies a value that SHALL be exactly the value
  /// for this element in the instance. For purposes of comparison,
  /// non-significant whitespace is ignored, and all values must be an exact
  /// match (case and accent sensitive). Missing elements/attributes must also
  ///  be missing.
  CodeableConcept? fixedCodeableConcept,
  CodeableReference? fixedCodeableReference,

  /// [fixedCoding] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Coding? fixedCoding,

  /// [fixedContactPoint] Specifies a value that SHALL be exactly the value
  /// for this element in the instance. For purposes of comparison,
  /// non-significant whitespace is ignored, and all values must be an exact
  /// match (case and accent sensitive). Missing elements/attributes must also
  ///  be missing.
  ContactPoint? fixedContactPoint,

  /// [fixedCount] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Count? fixedCount,

  /// [fixedDistance] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Distance? fixedDistance,

  /// [fixedDuration] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirDuration? fixedDuration,

  /// [fixedHumanName] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  HumanName? fixedHumanName,

  /// [fixedIdentifier] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Identifier? fixedIdentifier,

  /// [fixedMoney] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Money? fixedMoney,

  /// [fixedPeriod] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Period? fixedPeriod,

  /// [fixedQuantity] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Quantity? fixedQuantity,

  /// [fixedRange] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Range? fixedRange,

  /// [fixedRatio] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Ratio? fixedRatio,
  RatioRange? fixedRatioRange,

  /// [fixedReference] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Reference? fixedReference,

  /// [fixedSampledData] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  SampledData? fixedSampledData,

  /// [fixedSignature] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Signature? fixedSignature,

  /// [fixedTiming] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Timing? fixedTiming,

  /// [fixedContactDetail] Specifies a value that SHALL be exactly the value
  /// for this element in the instance. For purposes of comparison,
  /// non-significant whitespace is ignored, and all values must be an exact
  /// match (case and accent sensitive). Missing elements/attributes must also
  ///  be missing.
  ContactDetail? fixedContactDetail,

  /// [fixedContributor] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Contributor? fixedContributor,

  /// [fixedDataRequirement] Specifies a value that SHALL be exactly the value
  /// for this element in the instance. For purposes of comparison,
  /// non-significant whitespace is ignored, and all values must be an exact
  /// match (case and accent sensitive). Missing elements/attributes must also
  ///  be missing.
  DataRequirement? fixedDataRequirement,

  /// [fixedExpression] Specifies a value that SHALL be exactly the value  for
  /// this element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  FhirExpression? fixedExpression,

  /// [fixedParameterDefinition] Specifies a value that SHALL be exactly the
  /// value  for this element in the instance. For purposes of comparison,
  /// non-significant whitespace is ignored, and all values must be an exact
  /// match (case and accent sensitive). Missing elements/attributes must also
  ///  be missing.
  ParameterDefinition? fixedParameterDefinition,

  /// [fixedRelatedArtifact] Specifies a value that SHALL be exactly the value
  /// for this element in the instance. For purposes of comparison,
  /// non-significant whitespace is ignored, and all values must be an exact
  /// match (case and accent sensitive). Missing elements/attributes must also
  ///  be missing.
  RelatedArtifact? fixedRelatedArtifact,

  /// [fixedTriggerDefinition] Specifies a value that SHALL be exactly the
  /// value  for this element in the instance. For purposes of comparison,
  /// non-significant whitespace is ignored, and all values must be an exact
  /// match (case and accent sensitive). Missing elements/attributes must also
  ///  be missing.
  TriggerDefinition? fixedTriggerDefinition,

  /// [fixedUsageContext] Specifies a value that SHALL be exactly the value
  /// for this element in the instance. For purposes of comparison,
  /// non-significant whitespace is ignored, and all values must be an exact
  /// match (case and accent sensitive). Missing elements/attributes must also
  ///  be missing.
  UsageContext? fixedUsageContext,

  /// [fixedDosage] Specifies a value that SHALL be exactly the value  for this
  /// element in the instance. For purposes of comparison, non-significant
  /// whitespace is ignored, and all values must be an exact match (case and
  ///  accent sensitive). Missing elements/attributes must also be missing.
  Dosage? fixedDosage,

  /// [patternBase64Binary] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirBase64Binary? patternBase64Binary,

  /// [patternBase64BinaryElement] Extensions for patternBase64Binary
  @JsonKey(name: '_patternBase64Binary') Element? patternBase64BinaryElement,

  /// [patternBoolean] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirBoolean? patternBoolean,

  /// [patternBooleanElement] Extensions for patternBoolean
  @JsonKey(name: '_patternBoolean') Element? patternBooleanElement,

  /// [patternCanonical] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirCanonical? patternCanonical,

  /// [patternCanonicalElement] Extensions for patternCanonical
  @JsonKey(name: '_patternCanonical') Element? patternCanonicalElement,

  /// [patternCode] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirCode? patternCode,

  /// [patternCodeElement] Extensions for patternCode
  @JsonKey(name: '_patternCode') Element? patternCodeElement,

  /// [patternDate] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirDate? patternDate,

  /// [patternDateElement] Extensions for patternDate
  @JsonKey(name: '_patternDate') Element? patternDateElement,

  /// [patternDateTime] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirDateTime? patternDateTime,

  /// [patternDateTimeElement] Extensions for patternDateTime
  @JsonKey(name: '_patternDateTime') Element? patternDateTimeElement,

  /// [patternDecimal] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirDecimal? patternDecimal,

  /// [patternDecimalElement] Extensions for patternDecimal
  @JsonKey(name: '_patternDecimal') Element? patternDecimalElement,

  /// [patternId] Specifies a value that the value in the instance SHALL follow
  /// - that is, any value in the pattern must be found in the instance. Other
  /// additional values may be found too. This is effectively constraint by
  ///  example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirId? patternId,

  /// [patternIdElement] Extensions for patternId
  @JsonKey(name: '_patternId') Element? patternIdElement,

  /// [patternInstant] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirInstant? patternInstant,

  /// [patternInstantElement] Extensions for patternInstant
  @JsonKey(name: '_patternInstant') Element? patternInstantElement,

  /// [patternInteger] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirInteger? patternInteger,

  /// [patternIntegerElement] Extensions for patternInteger
  @JsonKey(name: '_patternInteger') Element? patternIntegerElement,

  /// [patternMarkdown] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirMarkdown? patternMarkdown,

  /// [patternMarkdownElement] Extensions for patternMarkdown
  @JsonKey(name: '_patternMarkdown') Element? patternMarkdownElement,

  /// [patternOid] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirOid? patternOid,

  /// [patternOidElement] Extensions for patternOid
  @JsonKey(name: '_patternOid') Element? patternOidElement,

  /// [patternPositiveInt] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirPositiveInt? patternPositiveInt,

  /// [patternPositiveIntElement] Extensions for patternPositiveInt
  @JsonKey(name: '_patternPositiveInt') Element? patternPositiveIntElement,

  /// [patternString] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  String? patternString,

  /// [patternStringElement] Extensions for patternString
  @JsonKey(name: '_patternString') Element? patternStringElement,

  /// [patternTime] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirTime? patternTime,

  /// [patternTimeElement] Extensions for patternTime
  @JsonKey(name: '_patternTime') Element? patternTimeElement,

  /// [patternUnsignedInt] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirUnsignedInt? patternUnsignedInt,

  /// [patternUnsignedIntElement] Extensions for patternUnsignedInt
  @JsonKey(name: '_patternUnsignedInt') Element? patternUnsignedIntElement,

  /// [patternUri] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirUri? patternUri,

  /// [patternUriElement] Extensions for patternUri
  @JsonKey(name: '_patternUri') Element? patternUriElement,

  /// [patternUrl] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirUrl? patternUrl,

  /// [patternUrlElement] Extensions for patternUrl
  @JsonKey(name: '_patternUrl') Element? patternUrlElement,

  /// [patternUuid] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirUuid? patternUuid,

  /// [patternUuidElement] Extensions for patternUuid
  @JsonKey(name: '_patternUuid') Element? patternUuidElement,

  /// [patternAddress] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Address? patternAddress,

  /// [patternAge] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Age? patternAge,

  /// [patternAnnotation] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Annotation? patternAnnotation,

  /// [patternAttachment] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Attachment? patternAttachment,

  /// [patternCodeableConcept] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  CodeableConcept? patternCodeableConcept,
  CodeableReference? patternCodeableReference,

  /// [patternCoding] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Coding? patternCoding,

  /// [patternContactPoint] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  ContactPoint? patternContactPoint,

  /// [patternCount] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Count? patternCount,

  /// [patternDistance] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Distance? patternDistance,

  /// [patternDuration] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirDuration? patternDuration,

  /// [patternHumanName] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  HumanName? patternHumanName,

  /// [patternIdentifier] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Identifier? patternIdentifier,

  /// [patternMoney] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Money? patternMoney,

  /// [patternPeriod] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Period? patternPeriod,

  /// [patternQuantity] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Quantity? patternQuantity,

  /// [patternRange] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Range? patternRange,

  /// [patternRatio] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Ratio? patternRatio,
  RatioRange? patternRatioRange,

  /// [patternReference] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Reference? patternReference,

  /// [patternSampledData] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  SampledData? patternSampledData,

  /// [patternSignature] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Signature? patternSignature,

  /// [patternTiming] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Timing? patternTiming,

  /// [patternContactDetail] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  ContactDetail? patternContactDetail,

  /// [patternContributor] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Contributor? patternContributor,

  /// [patternDataRequirement] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  DataRequirement? patternDataRequirement,

  /// [patternExpression] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  FhirExpression? patternExpression,

  /// [patternParameterDefinition] Specifies a value that the value in the
  /// instance SHALL follow - that is, any value in the pattern must be found in
  /// the instance. Other additional values may be found too. This is
  ///  effectively constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  ParameterDefinition? patternParameterDefinition,

  /// [patternRelatedArtifact] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  RelatedArtifact? patternRelatedArtifact,

  /// [patternTriggerDefinition] Specifies a value that the value in the
  /// instance SHALL follow - that is, any value in the pattern must be found in
  /// the instance. Other additional values may be found too. This is
  ///  effectively constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  TriggerDefinition? patternTriggerDefinition,

  /// [patternUsageContext] Specifies a value that the value in the instance
  /// SHALL follow - that is, any value in the pattern must be found in the
  /// instance. Other additional values may be found too. This is effectively
  ///  constraint by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  UsageContext? patternUsageContext,

  /// [patternDosage] Specifies a value that the value in the instance SHALL
  /// follow - that is, any value in the pattern must be found in the instance.
  /// Other additional values may be found too. This is effectively constraint
  ///  by example.
  /// When pattern[x] is used to constrain a primitive, it means that the value
  ///  provided in the pattern[x] must match the instance value exactly.
  /// When pattern[x] is used to constrain an array, it means that each element
  /// provided in the pattern[x] array must (recursively) match at least one
  ///  element from the instance array.
  /// When pattern[x] is used to constrain a complex object, it means that each
  /// property in the pattern must be present in the complex object, and its
  ///  value must recursively match -- i.e.,
  /// 1. If primitive: it must match exactly the pattern value
  /// 2. If a complex object: it must match (recursively) the pattern value
  /// 3. If an array: it must match (recursively) the pattern value.
  Dosage? patternDosage,

  /// [example] A sample value for this element demonstrating the type of
  ///  information that would typically be found in the element.
  List<ElementDefinitionExample>? example,

  /// [minValueDate] The minimum allowed value for the element. The value is
  /// inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirDate? minValueDate,

  /// [minValueDateElement] Extensions for minValueDate
  @JsonKey(name: '_minValueDate') Element? minValueDateElement,

  /// [minValueDateTime] The minimum allowed value for the element. The value
  /// is inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirDateTime? minValueDateTime,

  /// [minValueDateTimeElement] Extensions for minValueDateTime
  @JsonKey(name: '_minValueDateTime') Element? minValueDateTimeElement,

  /// [minValueInstant] The minimum allowed value for the element. The value is
  /// inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirInstant? minValueInstant,

  /// [minValueInstantElement] Extensions for minValueInstant
  @JsonKey(name: '_minValueInstant') Element? minValueInstantElement,

  /// [minValueTime] The minimum allowed value for the element. The value is
  /// inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirTime? minValueTime,

  /// [minValueTimeElement] Extensions for minValueTime
  @JsonKey(name: '_minValueTime') Element? minValueTimeElement,

  /// [minValueDecimal] The minimum allowed value for the element. The value is
  /// inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirDecimal? minValueDecimal,

  /// [minValueDecimalElement] Extensions for minValueDecimal
  @JsonKey(name: '_minValueDecimal') Element? minValueDecimalElement,

  /// [minValueInteger] The minimum allowed value for the element. The value is
  /// inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirInteger? minValueInteger,

  /// [minValueIntegerElement] Extensions for minValueInteger
  @JsonKey(name: '_minValueInteger') Element? minValueIntegerElement,

  /// [minValuePositiveInt] The minimum allowed value for the element. The
  /// value is inclusive. This is allowed for the types date, dateTime, instant,
  ///  time, decimal, integer, and Quantity.
  FhirPositiveInt? minValuePositiveInt,

  /// [minValuePositiveIntElement] Extensions for minValuePositiveInt
  @JsonKey(name: '_minValuePositiveInt') Element? minValuePositiveIntElement,

  /// [minValueUnsignedInt] The minimum allowed value for the element. The
  /// value is inclusive. This is allowed for the types date, dateTime, instant,
  ///  time, decimal, integer, and Quantity.
  FhirUnsignedInt? minValueUnsignedInt,

  /// [minValueUnsignedIntElement] Extensions for minValueUnsignedInt
  @JsonKey(name: '_minValueUnsignedInt') Element? minValueUnsignedIntElement,

  /// [minValueQuantity] The minimum allowed value for the element. The value
  /// is inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  Quantity? minValueQuantity,

  /// [maxValueDate] The maximum allowed value for the element. The value is
  /// inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirDate? maxValueDate,

  /// [maxValueDateElement] Extensions for maxValueDate
  @JsonKey(name: '_maxValueDate') Element? maxValueDateElement,

  /// [maxValueDateTime] The maximum allowed value for the element. The value
  /// is inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirDateTime? maxValueDateTime,

  /// [maxValueDateTimeElement] Extensions for maxValueDateTime
  @JsonKey(name: '_maxValueDateTime') Element? maxValueDateTimeElement,

  /// [maxValueInstant] The maximum allowed value for the element. The value is
  /// inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirInstant? maxValueInstant,

  /// [maxValueInstantElement] Extensions for maxValueInstant
  @JsonKey(name: '_maxValueInstant') Element? maxValueInstantElement,

  /// [maxValueTime] The maximum allowed value for the element. The value is
  /// inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirTime? maxValueTime,

  /// [maxValueTimeElement] Extensions for maxValueTime
  @JsonKey(name: '_maxValueTime') Element? maxValueTimeElement,

  /// [maxValueDecimal] The maximum allowed value for the element. The value is
  /// inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirDecimal? maxValueDecimal,

  /// [maxValueDecimalElement] Extensions for maxValueDecimal
  @JsonKey(name: '_maxValueDecimal') Element? maxValueDecimalElement,

  /// [maxValueInteger] The maximum allowed value for the element. The value is
  /// inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  FhirInteger? maxValueInteger,

  /// [maxValueIntegerElement] Extensions for maxValueInteger
  @JsonKey(name: '_maxValueInteger') Element? maxValueIntegerElement,

  /// [maxValuePositiveInt] The maximum allowed value for the element. The
  /// value is inclusive. This is allowed for the types date, dateTime, instant,
  ///  time, decimal, integer, and Quantity.
  FhirPositiveInt? maxValuePositiveInt,

  /// [maxValuePositiveIntElement] Extensions for maxValuePositiveInt
  @JsonKey(name: '_maxValuePositiveInt') Element? maxValuePositiveIntElement,

  /// [maxValueUnsignedInt] The maximum allowed value for the element. The
  /// value is inclusive. This is allowed for the types date, dateTime, instant,
  ///  time, decimal, integer, and Quantity.
  FhirUnsignedInt? maxValueUnsignedInt,

  /// [maxValueUnsignedIntElement] Extensions for maxValueUnsignedInt
  @JsonKey(name: '_maxValueUnsignedInt') Element? maxValueUnsignedIntElement,

  /// [maxValueQuantity] The maximum allowed value for the element. The value
  /// is inclusive. This is allowed for the types date, dateTime, instant, time,
  ///  decimal, integer, and Quantity.
  Quantity? maxValueQuantity,

  /// [maxLength] Indicates the maximum length in characters that is permitted
  /// to be present in conformant instances and which is expected to be
  ///  supported by conformant consumers that support the element.
  FhirInteger? maxLength,

  /// [maxLengthElement] Extensions for maxLength
  @JsonKey(name: '_maxLength') Element? maxLengthElement,

  /// [condition] A reference to an invariant that may make additional
  ///  statements about the cardinality or value in the instance.
  List<FhirId>? condition,

  /// [conditionElement] Extensions for condition
  @JsonKey(name: '_condition') List<Element?>? conditionElement,

  /// [constraint] Formal constraints such as co-occurrence and other
  /// constraints that can be computationally evaluated within the context of
  ///  the instance.
  List<ElementDefinitionConstraint>? constraint,

  /// [mustSupport] If true, implementations that produce or consume resources
  /// SHALL provide "support" for the element in some meaningful way.  If false,
  /// the element may be ignored and not supported. If false, whether to
  /// populate or use the data element in any way is at the discretion of the
  ///  implementation.
  FhirBoolean? mustSupport,

  /// [mustSupportElement] Extensions for mustSupport
  @JsonKey(name: '_mustSupport') Element? mustSupportElement,

  /// [isModifier] If true, the value of this element affects the
  /// interpretation of the element or resource that contains it, and the value
  /// of the element cannot be ignored. Typically, this is used for status,
  /// negation and qualification codes. The effect of this is that the element
  /// cannot be ignored by systems: they SHALL either recognize the element and
  /// process it, and/or a pre-determination has been made that it is not
  ///  relevant to their particular system.
  FhirBoolean? isModifier,

  /// [isModifierElement] Extensions for isModifier
  @JsonKey(name: '_isModifier') Element? isModifierElement,

  /// [isModifierReason] Explains how that element affects the interpretation
  ///  of the resource or element that contains it.
  String? isModifierReason,

  /// [isModifierReasonElement] Extensions for isModifierReason
  @JsonKey(name: '_isModifierReason') Element? isModifierReasonElement,

  /// [isSummary] Whether the element should be included if a client requests a
  ///  search with the parameter _summary=true.
  FhirBoolean? isSummary,

  /// [isSummaryElement] Extensions for isSummary
  @JsonKey(name: '_isSummary') Element? isSummaryElement,

  /// [binding] Binds to a value set if this element is coded (code, Coding,
  ///  CodeableConcept, Quantity), or the data types (string, uri).
  ElementDefinitionBinding? binding,

  /// [mapping] Identifies a concept from an external specification that
  ///  roughly corresponds to this element.
  List<ElementDefinitionMapping>? mapping,
}) = _ElementDefinition;