_GetAncestor
Ancestor* fromAncestor = _GetAncestor(fromEntryRef.DirectoryNodeRef());
Ancestor* toAncestor = _GetAncestor(toEntryRef.DirectoryNodeRef());
if (Ancestor* ancestor = _GetAncestor(nodeRef)) {
Ancestor* ancestor = _GetAncestor(nodeRef);
ancestor = _GetAncestor(entryRef.DirectoryNodeRef());
Ancestor* ancestor = _GetAncestor(nodeRef);
ancestor = _GetAncestor(entryRef.DirectoryNodeRef());
Ancestor* _GetAncestor(const node_ref& nodeRef) const;