whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>({
  1. TResult? cookie(
    1. String? name,
    2. String? description,
    3. bool? required,
    4. bool? deprecated,
    5. String? style,
    6. bool? explode,
    7. bool? allowReserved,
    8. String? example,
    9. Schema schema,
    10. @JsonKey.new(name: '\$ref') String? ref,
    )?,
  2. TResult? header(
    1. String? name,
    2. String? description,
    3. bool? required,
    4. bool? deprecated,
    5. String? style,
    6. bool? explode,
    7. bool? allowReserved,
    8. String? example,
    9. Schema schema,
    10. @JsonKey.new(name: '\$ref') String? ref,
    )?,
  3. TResult? query(
    1. String? name,
    2. String? description,
    3. bool? required,
    4. bool? deprecated,
    5. String? style,
    6. bool? explode,
    7. bool? allowReserved,
    8. String? example,
    9. Schema schema,
    10. @JsonKey.new(name: '\$ref') String? ref,
    )?,
  4. TResult? path(
    1. String? name,
    2. String? description,
    3. bool? deprecated,
    4. String? style,
    5. bool? explode,
    6. bool? allowReserved,
    7. String? example,
    8. Schema? schema,
    9. @JsonKey.new(name: '\$ref') String? ref,
    )?,
})

A variant of when that fallback to returning null

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>({TResult? Function( String? name,  String? description,  bool? required,  bool? deprecated,  String? style,  bool? explode,  bool? allowReserved,  String? example,  Schema schema, @JsonKey(name: '\$ref')@_ParamRefConverter()  String? ref)?  cookie,TResult? Function( String? name,  String? description,  bool? required,  bool? deprecated,  String? style,  bool? explode,  bool? allowReserved,  String? example,  Schema schema, @JsonKey(name: '\$ref')@_ParamRefConverter()  String? ref)?  header,TResult? Function( String? name,  String? description,  bool? required,  bool? deprecated,  String? style,  bool? explode,  bool? allowReserved,  String? example,  Schema schema, @JsonKey(name: '\$ref')@_ParamRefConverter()  String? ref)?  query,TResult? Function( String? name,  String? description,  bool? deprecated,  String? style,  bool? explode,  bool? allowReserved,  String? example,  Schema? schema, @JsonKey(name: '\$ref')@_ParamRefConverter()  String? ref)?  path,}) {final _that = this;
switch (_that) {
case ParameterCookie() when cookie != null:
return cookie(_that.name,_that.description,_that.required,_that.deprecated,_that.style,_that.explode,_that.allowReserved,_that.example,_that.schema,_that.ref);case ParameterHeader() when header != null:
return header(_that.name,_that.description,_that.required,_that.deprecated,_that.style,_that.explode,_that.allowReserved,_that.example,_that.schema,_that.ref);case ParameterQuery() when query != null:
return query(_that.name,_that.description,_that.required,_that.deprecated,_that.style,_that.explode,_that.allowReserved,_that.example,_that.schema,_that.ref);case ParameterPath() when path != null:
return path(_that.name,_that.description,_that.deprecated,_that.style,_that.explode,_that.allowReserved,_that.example,_that.schema,_that.ref);case _:
  return null;

}
}