code: def _connect_broker(self):
          
          if not self.broker:
              self.broker = mitogen.master.Broker()
              self.router, self.parent = mitogen.unix.connect(
                  path=ansible_mitogen.process.MuxProcess.unix_listener_path,
                  broker=self.broker,
              )
docs: Establish a reference to the Broker, Router and parent context used for
          connections.