when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String identifier,
    2. List<LabelValueDefinitionFlag> flags,
    3. bool configurable,
    4. LabelPreference defaultSetting,
    5. String severity,
    6. String blurs,
    7. Map<LabelTarget, Map<ModerationBehaviorContext, ModerationBehavior>> behaviors,
    8. String? definedBy,
    )
)

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( String identifier,  List<LabelValueDefinitionFlag> flags,  bool configurable,  LabelPreference defaultSetting,  String severity,  String blurs,  Map<LabelTarget, Map<ModerationBehaviorContext, ModerationBehavior>> behaviors,  String? definedBy)  $default,) {final _that = this;
switch (_that) {
case _InterpretedLabelValueDefinition():
return $default(_that.identifier,_that.flags,_that.configurable,_that.defaultSetting,_that.severity,_that.blurs,_that.behaviors,_that.definedBy);case _:
  throw StateError('Unexpected subclass');

}
}