gimp/menus/tool-presets-menu.xml

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

<ui>
  <popup action="tool-presets-popup">
    <menuitem action="tool-presets-edit" />
    <separator />
    <menuitem action="tool-presets-new" />
    <menuitem action="tool-presets-duplicate" />
    <menuitem action="tool-presets-copy-location" />
    <menuitem action="tool-presets-show-in-file-manager" />
    <menuitem action="tool-presets-restore" />
    <menuitem action="tool-presets-delete" />
    <separator />
    <menuitem action="tool-presets-refresh" />
    <separator />
  </popup>
</ui>