whenOrNull<TResult extends Object?> method Null safety

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. {TResult initial(
      )?,
    1. TResult inProgress(
      1. bool like
      )?,
    2. TResult success(
      1. bool like
      )?,
    3. TResult failure(
      1. Failure failure
      )?}
    )
    @optionalTypeArgs, inherited

    Implementation

    @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>({
  TResult Function()? initial,
  TResult Function(bool like)? inProgress,
  TResult Function(bool like)? success,
  TResult Function(Failure failure)? failure,
}) =>
    throw _privateConstructorUsedError;