code: def sendMessage(self, msg_dict):
          
          sent_ids = []
          for name in msg_dict:
              self.last_msg_id += 1
              msg_dict[name]['ID'] = self.last_msg_id
              sent_ids.append((name, self.last_msg_id))
          llrp_msg = LLRPMessage(msgdict=msg_dict)
  
          assert llrp_msg.msgbytes, "LLRPMessage is empty"
          self.transport.write(llrp_msg.msgbytes)
  
          return sent_ids
docs: Serialize and send a dict LLRP Message
  
          Note: IDs should be modified in original msg_dict as it is a reference.
          That should be ok.