code: def _handle_human_connection_event(
          self,
          event: events.HumanConnectionEvent,
      ) -> None:
          
          for subscriber in self._human_connection_subscribers:
              try:
                  subscriber(event)
              except Exception:
                  LOG.exception(self._prefix_log_message(
                      f"failed to send human connection event {event} to "
                      f"subscriber {subscriber}"
                  ))
docs: Not thread-safe.