private void setLicensingUrl(String url) {
        mLicensingUrl = url;
        mPreferences.putString(PREF_LICENSING_URL, url);
    }
Set the licensing URL that displays a Play Store UI for the user to regain app access.

@param url the LU string received
android/android_framework/base/src/main/java/com/google/android/vending/licensing/APKExpansionPolicy.java