class AppException implements Exception {
  final String message;
  
  AppException(this.message);
  
  @override
  String toString() => message;
}

class NetworkException extends AppException {
  NetworkException(super.message);
}

class AuthException extends AppException {
  AuthException(super.message);
}

class UnexpectedException extends AppException {
  UnexpectedException(super.message);
}