code: def dispatch(self, pid, method, *args):
      
      self._assert_started()
      self._assert_local_pid(pid)
      function = self._get_dispatch_method(pid, method)
      self.__loop.add_callback(function, *args)
docs: Call a method on another process by its pid.
  
      The method on the other process does not need to be installed with
      ``Process.install``.  The call is serialized with all other calls on the
      context's event loop.  The pid must be bound to this context.
  
      This function returns immediately.
  
      :param pid: The pid of the process to be called.
      :type pid: :class:`PID`
      :param method: The name of the method to be called.
      :type method: ``str``
      :return: Nothing