leave method
Implementation
Future<void> leave() {
Completer completer = Completer();
if (CubeDialogType.PRIVATE == type) {
completer.complete(null);
} else {
checkInit().then((abstractChat) {
(abstractChat as GroupChat).leave().then((result) {
completer.complete((null));
}).catchError((error) {
completer.completeError(error);
});
}).catchError((error) {
completer.completeError(error);
});
}
return completer.future;
}