gimp/menus/documents-menu.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE ui SYSTEM "gtkuimanager.dtd">

<ui>
  <popup action="documents-popup">
    <menuitem action="documents-open" />
    <menuitem action="documents-raise-or-open" />
    <menuitem action="documents-file-open-dialog" />
    <menuitem action="documents-copy-location" />
    <menuitem action="documents-remove" />
    <menuitem action="documents-clear" />
    <separator />
    <menuitem action="documents-recreate-preview" />
    <menuitem action="documents-reload-previews" />
    <menuitem action="documents-remove-dangling" />
  </popup>
</ui>