text: from typing import Optional
  
  from b_lambda_layer_common.exceptions.http_exception import HttpException
  
  
  class NotReachedError(HttpException):
      def __init__(self, message: Optional[str] = None):
          super().__init__(message)
  
      @staticmethod
      def http_code() -> int:
          return 0
  
      @staticmethod
      def identifier() -> str:
          return 'B_NOT_REACHED'
  
      @staticmethod
      def description() -> str:
          return (
              'The server tried to call another server in order to complete the initial request, however, '
              'failed to do so because the host was not reachable.'
          )
  