- /**
- * Get element IDs for specified group
- *
- * Note that it is expected behavior if a child has been moved out from this parent,
- * but still remained in the group of old parent. The method will return only actual children.
- * This is intentional, in case if the child returns back to the old parent.
- *
- * @param string $parentId Name of an element containing group
- * @param string $groupName
- * @return array
- */
- public function getGroupChildNames($parentId, $groupName)
