code: def start(self, exit=True):
          '''Called after forking to start the actor's life.
  
          This is where logging is configured, the :attr:`mailbox` is
          registered and the :attr:`_loop` is initialised and
          started. Calling this method more than once does nothing.
          '''
          if self.state == ACTOR_STATES.INITIAL:
              self._concurrency.before_start(self)
              self._concurrency.add_events(self)
              try:
                  self.cfg.when_ready(self)
              except Exception:   # pragma    nocover
                  self.logger.exception('Unhandled exception in when_ready hook')
              self._started = self._loop.time()
              self._exit = exit
              self.state = ACTOR_STATES.STARTING
              self._run(f start(self, exit=True):
          '''Called after forking to start the actor's life.
  
          This is where logging is configured, the :attr:`mailbox` is
          registered and the :attr:`_loop` is initialised and
          started. Calling this method more than once does nothing.
          '''
          if self.state == ACTOR_STATES.INITIAL:
              self._concurrency.before_start(self)
              self._concurrency.add_events(self)
              try:
                  self.cfg.when_ready(self)
              except Exception:   # pragma    nocover
                  self.logger.exception('Unhandled exception in when_ready hook')
              self._started = self._loop.time()
              self._exit = exit
              self.state = ACTOR_STATES.STARTING
              self._run()
docs: Called after forking to start the actor's life.
  
          This is where logging is configured, the :attr:`mailbox` is
          registered and the :attr:`_loop` is initialised and
          started. Calling this method more than once does nothing.