code: def update_connection_endpoint(self, connection_id, endpoint):
          
          if connection_id in self._connections:
              connection_info = self._connections[connection_id]
              self._connections[connection_id] = \
                  ConnectionInfo(connection_info.connection_type,
                                 connection_info.connection,
                                 endpoint,
                                 connection_info.status,
                                 connection_info.public_key)
  
          else:
              LOGGER.debug("Could not update the endpoint %s for "
                           "connection_id %s. The connection does not "
                           "exist.",
                           endpoint,
                           connection_id)
docs: Adds the endpoint to the connection definition. When the
          connection is created by the send/receive thread, we do not
          yet have the endpoint of the remote node. That is not known
          until we process the incoming ConnectRequest.
  
          Args:
              connection_id (str): The identifier for the connection.
              endpoint (str): A zmq-style uri which identifies a publically
                  reachable endpoint.