/**
  * Delete skill
  */
 function delete()
 {
     global $ilDB;
     $ilDB->manipulate("DELETE FROM skl_level WHERE " . " skill_id = " . $ilDB->quote($this->getId(), "integer"));
     $ilDB->manipulate("DELETE FROM skl_user_has_level WHERE " . " skill_id = " . $ilDB->quote($this->getId(), "integer"));
     parent::delete();
 }
 /**
  * Delete skill
  */
 function delete()
 {
     parent::delete();
 }
 /**
  * Delete skill
  */
 function delete()
 {
     global $ilDB;
     $ilDB->manipulate("DELETE FROM skl_templ_ref WHERE " . " skl_node_id = " . $ilDB->quote($this->getId(), "integer"));
     parent::delete();
 }