Question on two Zigbee commands

🚧 Developers Coding Questions
1

I'm slowly learning more Hubitat/Groovy and have a question on two lines of code I found in existing Zigbee device drivers:

  1. what is the significance of "new" in the below snippet?

     def sendCommand(String msg) {
     if (txtEnable) log.info "sendCommand - ${msg}"
     sendHubCommand(new HubAction(sendtodevice(msg), Protocol.ZIGBEE))
 }

  2. In several examples I see the parse code include tests for the existence of either "catchall:" or "read attr -' at the beginning of a received message description. While I understand the definition of the words I couldn't find the significance of these messages. I looked through all the Zigbee documents I have with no luck.

Can someone help me with these?

Thanks
John

2

Creates a new HobAction object

Zigbee broadcast packet data

Unicast Zigbee packet data

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