code: def send(self, to, method, body=None):
      
      self._assert_bound()
      self._context.send(self.pid, to, method, body)
docs: Send a message to another process.
  
      Sending messages is done asynchronously and is not guaranteed to succeed.
  
      Returns immediately.
  
      :param to: The pid of the process to send a message.
      :type to: :class:`PID`
      :param method: The method/mailbox name of the remote method.
      :type method: ``str``
      :keyword body: The optional content to send with the message.
      :type body: ``bytes`` or None
      :raises: Will raise a ``Process.UnboundProcess`` exception if the
               process is not bound to a context.
      :return: Nothing