Merge "Fix a theoretical NPE"

     *        this is the destination the probes are being redirected to, otherwise {@code null}.

     */

    public void onValidationStatus(@ValidationStatus int status, @Nullable Uri redirectUri) {

        networkStatus(status, redirectUri.toString());

        networkStatus(status, null == redirectUri ? "" : redirectUri.toString());

    }

    /** @hide TODO delete once subclasses have moved to onValidationStatus */

    protected void networkStatus(int status, String redirectUrl) {