docs: def _message(self, beacon_config, invert_hello=False):
  		""" Generate request/response message.
  
  		:param beacon_config: server or client configuration. Client configuration is used for request and \
  		server configuration for response
  		:param invert_hello: return message with reverse header when this argument is set to True.
  		:return: bytes
  		"""
  
  		message = self.hello_message(invert_hello=invert_hello) + self._message_address_generate(beacon_config)
  		return message