watchClose method
Implementation
Future<Object> watchClose(HClientWatch w, {bool send = true}) {
// mark flag on watch itself, short circuit if already closed
if (w.isClosed) {
return Future.value();
}
w._closed = true;
// remove it from my lookup table
if (w.id != null) {
_watches.remove(w.id);
}
// optionally send close message to server
if (send) {
HGridBuilder b = HGridBuilder();
b.meta.add("watchId", w.id).add("close");
b.addCol("id");
// Ignoring any error while unsub.
return call("watchUnsub", b.toGrid()).catchError((Object e) {});
} else {
return Future.value();
}
}