unstructured

e131439d - feat: add group_elements_by_parent_id utility function (#4207)

feat: add group_elements_by_parent_id utility function (#4207) Add a utility function to group elements by their parent_id metadata field. This allows users to easily traverse document hierarchy by grouping elements that share the same parent. Includes an optional 'assign_orphans' parameter that, when True, assigns elements with no parent_id to the same group as the previous element. Fixes #1489