private function updateCustomFeedbackValues($apnsFeedback, $feedback, $deviceTokens)
    {

        //Add failures amount based on apple feedback to our custom feedback
        $feedback['failure'] += count($apnsFeedback['apnsFeedback']);

        //apns tokens
        $apnsTokens = array_pluck($apnsFeedback['apnsFeedback'], 'devtoken');

        foreach ($deviceTokens as $token) {
            if (in_array($token, $apnsTokens)) {
                $feedback['success'] -= 1;
                $feedback['tokenFailList'][] = $token;
            }

        }

        return $feedback;
    }