XmVaCreateManagedHierarchy(3) on Linux
The text ea3809b1a997, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A Hierarchy widget convenience creation functions. "XmVaCreateHierarchy" "XmVaCreateManagedHierarchy" "creation functions"