whenOrNull<TResult extends Object?> method

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? $default(int groupId, String groupName, int used, int limit, String source,)?)

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(
    int groupId,
    String groupName,
    int used,
    int limit,
    String source,
  )?
  $default,
) {
  final _that = this;
  switch (_that) {
    case _Sub2ApiAdminUserGroupRpmStatus() when $default != null:
      return $default(
        _that.groupId,
        _that.groupName,
        _that.used,
        _that.limit,
        _that.source,
      );
    case _:
      return null;
  }
}