Classes/Service/ImageResizer.php
protected function notify($callbackNotification, $message, $severity)
    {
        $callableName = '';
        if (is_callable($callbackNotification, false, $callableName)) {
            call_user_func($callbackNotification, $message, $severity);
        }
    }
protected function notify($callbackNotification, $message, $severity)
    {
        $callableName = '';
        if (is_callable($callbackNotification, false, $callableName)) {
            call_user_func($callbackNotification, $message, $severity);
        }
    }
Sends a notification.

@param callback $callbackNotification Callback to send notification
@param string $message
@param integer $severity