public function events()
{
return [BaseActiveRecord::EVENT_BEFORE_VALIDATE => 'beforeValidate', BaseActiveRecord::EVENT_BEFORE_INSERT => 'beforeSave', BaseActiveRecord::EVENT_BEFORE_UPDATE => 'beforeSave', BaseActiveRecord::EVENT_AFTER_INSERT => 'afterSave', BaseActiveRecord::EVENT_AFTER_UPDATE => 'afterSave', BaseActiveRecord::EVENT_AFTER_DELETE => 'afterDelete'];
}