subscribe(cmd, nodeID) {
		const t = this.getTopicName(cmd, nodeID);

		const opts = this.client.subscriptionOptions(); //.setStartWithLastReceived().setDurableName(cmd); //No need durable & receive old messages
		const subscription = this.client.subscribe(t, opts);

		subscription.on("message", msg => this.receive(cmd, msg.getRawData()));
		return this.broker.Promise.resolve();
	}
Subscribe to a command

@param {String} cmd
@param {String} nodeID

@memberof StanTransporter