};
listHandler =
RemoteListingOperator.create(listingId, ListHandlerType.COLLECTION, criteria, propKeys, -1, defaultSorting);
listHandler.setSourcingWidget(this);
this.loader = loader;
crud = new CrudCommand();
addHandler(this, ListingEvent.TYPE);
addHandler(this, RpcEvent.TYPE);
flowPanel.add(gmp);
flowPanel.add(stackPanel);