public void resetPolicy() {
        mPreferences.putString(PREF_LAST_RESPONSE, Integer.toString(Policy.RETRY));
        setRetryUntil(DEFAULT_RETRY_UNTIL);
        setMaxRetries(DEFAULT_MAX_RETRIES);
        setRetryCount(Long.parseLong(DEFAULT_RETRY_COUNT));
        setValidityTimestamp(DEFAULT_VALIDITY_TIMESTAMP);
        mPreferences.commit();
    }
We call this to guarantee that we fetch a fresh policy from the server.
This is to be used if the URL is invalid.
android/android_framework/base/src/main/java/com/google/android/vending/licensing/APKExpansionPolicy.java