class NotSupportFCMException implements Exception {}

class NotLoadedFCMTokenException implements Exception {}

class NotFoundStateToRefreshException implements Exception {}

class NotFoundEmailDeliveryStateException implements Exception {}

class NotFoundFirebaseSubscriptionException implements Exception {}

class NotFoundSubscriptionException implements Exception {}

class NotFoundEmailStateException implements Exception {}

class NotFoundNewReceiveEmailException implements Exception {}

class EmailStateNoChangeException implements Exception {}