when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String? name,
    2. GithubCommitModel? commit,
    3. GithubBranchModelRef? baseRef,
    4. bool fromServer,
    )
)

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? name, @jsonParam GithubCommitModel? commit,
          @refParam GithubBranchModelRef baseRef, bool fromServer)
      $default,
) {
  final _that = this;
  switch (_that) {
    case _GithubBranchModel():
      return $default(
          _that.name, _that.commit, _that.baseRef, _that.fromServer);
    case _:
      throw StateError('Unexpected subclass');
  }
}