@Nullable
    protected Uri getUrlForManagingSpace() {
        try {
            ActivityInfo info = getPackageManager()
                .getActivityInfo(getComponentName(), PackageManager.GET_META_DATA);

            if (info.metaData != null && info.metaData.containsKey(METADATA_MANAGE_SPACE_URL)) {
                Uri uri = Uri.parse(info.metaData.getString(METADATA_MANAGE_SPACE_URL));
                Log.d(TAG, "Using clean-up URL from Manifest (" + uri + ").");
                return uri;
            }
        } catch (PackageManager.NameNotFoundException e) {
            // Should never happen.
            onError(new RuntimeException(e));
        }

        return null;
    }
@return url of the page for which site-settings will be launched.
By default uses the url provided in metadata.
If null is returned, site-settings won't be launched.
customtabs/src/android/support/customtabs/trusted/ManageDataLauncherActivity.java