public void setPkgSetId(@Nullable String pkgSetId) {
        XLog.i("setPkgSetId: " + pkgSetId);
        this.pkgSetId = pkgSetId;

        restoreSort();
    }
Null means we load all pkgs
android/app/src/main/java/now/fortuitous/thanos/power/SmartFreezeAppsViewModel.java