public function getDefaultElementTypes()
{
$default_element_types = \ElementType::model()->findAll(array('condition' => 'ophciexamination_element_set_item.set_id = :set_id AND ophciexamination_element_set_item.is_hidden = 0', 'join' => 'JOIN ophciexamination_element_set_item ON ophciexamination_element_set_item.element_type_id = t.id', 'order' => 'display_order', 'params' => array(':set_id' => $this->id)));
return $default_element_types;
}