supplementalData property
supplementalData A reference to a Resource that represents additional information collected for the report. If the value of the supplemental data is not a Resource (i.e. evaluating the supplementalData expression for this case in the measure results in a value that is not a FHIR Resource), it is reported as a reference to a contained Observation resource.
Implementation
List<Reference>? get supplementalData => throw _privateConstructorUsedError;