@property
    def md_at(self):
        if ('md_at' in self.md):
            return(self.md['md_at'])
        else:
            return(None)
:type message: Message
dataset/ETHPy150Open resync/resync/resync/resource_container.py/ResourceContainer.md_at--crossover with--dataset/ETHPy150Open Tanganelli/CoAPthon/coapthon/server/coap.py/CoAP.send_datagram