when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. ModerationCauseSource source,
    2. Label label,
    3. InterpretedLabelValueDefinition labelDef,
    4. LabelTarget target,
    5. LabelPreference setting,
    6. Map<ModerationBehaviorContext, ModerationBehavior> behavior,
    7. bool noOverride,
    8. int priority,
    9. bool downgraded,
    )
)

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( ModerationCauseSource source,  Label label,  InterpretedLabelValueDefinition labelDef,  LabelTarget target,  LabelPreference setting,  Map<ModerationBehaviorContext, ModerationBehavior> behavior,  bool noOverride, @Assert(_assertEvalPriority)  int priority,  bool downgraded)  $default,) {final _that = this;
switch (_that) {
case _ModerationCauseLabel():
return $default(_that.source,_that.label,_that.labelDef,_that.target,_that.setting,_that.behavior,_that.noOverride,_that.priority,_that.downgraded);case _:
  throw StateError('Unexpected subclass');

}
}