whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String $type,
    2. int? lists,
    3. int? feedgens,
    4. int? starterPacks,
    5. bool? labeler,
    6. ProfileAssociatedChat? chat,
    7. ProfileAssociatedActivitySubscription? activitySubscription,
    8. Map<String, dynamic>? $unknown,
    )?
)

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 $type,  int? lists,  int? feedgens,  int? starterPacks,  bool? labeler, @ProfileAssociatedChatConverter()  ProfileAssociatedChat? chat, @ProfileAssociatedActivitySubscriptionConverter()  ProfileAssociatedActivitySubscription? activitySubscription,  Map<String, dynamic>? $unknown)?  $default,) {final _that = this;
switch (_that) {
case _ProfileAssociated() when $default != null:
return $default(_that.$type,_that.lists,_that.feedgens,_that.starterPacks,_that.labeler,_that.chat,_that.activitySubscription,_that.$unknown);case _:
  return null;

}
}