public function init()
    {
        if (true === $this->beforeInit()) {
            HasPropertiesEvent::on(HasProperties::class, HasProperties::EVENT_AFTER_SAVE, [$this, 'onSave']);
            HasPropertiesEvent::on(HasProperties::class, HasProperties::EVENT_AFTER_UPDATE, [$this, 'onUpdate']);
            HasPropertiesEvent::on(HasProperties::class, HasProperties::EVENT_BEFORE_DELETE, [$this, 'onDelete']);
        }
    }