listen method
void
listen()
Listen to change events for this model.
Implementation
void listen() {
changeListener = client.listen(
(msg) {
var updatedValues = msg["data"]["values"] as Map<String, dynamic>;
updateFromJson(updatedValues);
changeEventsController.add(updatedValues);
},
filter: (msg) => msg["event"] == "$rid.change",
);
}