failureData property

Implementation

FailureType get failureData {
  if (isFailure) {
    final data = (this as _Failure<SuccessType, FailureType>).data;
    if (data == null) {
      throw const FormatException('Failure data not exist');
    }
    return data;
  }

  throw const FormatException('This is not Failure type');
}