static function delete($courseId) { if ($id = intval($courseId)) { CourseL10n::deleteAll($courseId); parent::delete($id); } }
static function delete($materialId) { MaterialL10n::deleteAll($materialId); parent::delete($materialId); }
static function delete($stageId) { StageL10n::deleteAll($stageId); parent::delete($stageId); }
static function delete($lessonId) { LessonL10n::deleteAll($lessonId); parent::delete($lessonId); }