OEModule\OphCoMessaging\controllers\DefaultController::canMarkRead PHP Method

    public function canMarkRead()
    {
        $el = $this->getMessageElement();
        if ($el->comments && $this->isSender(\Yii::app()->user)) {
            return $this->canMarkCommentRead($el);
        } else {
            return $this->canMarkMessageRead($el);
        }
    }