code: def sendm(self_p, dest):
          
          return lib.zmsg_sendm(byref(zmsg_p.from_param(self_p)), dest)
docs: Send message to destination socket as part of a multipart sequence, and
  destroy the message after sending it successfully. Note that after a
  zmsg_sendm, you must call zmsg_send or another method that sends a final
  message part. If the message has no frames, sends nothing but destroys
  the message anyhow. Nullifies the caller's reference to the message (as
  it is a destructor).