OPmenu.xml

<?xml version="1.0" encoding="UTF-8"?>

<menuDocument>
    <menu>
      <separatorItem/>
            <expression>
node = kwargs.get("node", None)
if node is None:
    return False
return node.type().category().name() == "Sop"
            </expression>
               <subMenu id="Axe_menu">
                        <label>[ Axe Menu ]</label>
                            <scriptItem id="axe_tool_1">
                                <label>Axe Tool 1</label>
                                <scriptCode>
				<![CDATA[
print(f'hello')]]>
			</scriptCode>
                            </scriptItem>

                            <scriptItem id="axe_tool_2">
                                <label>Axe Tool 2</label>
                                <scriptPath>$NS_BLENDER_IMPORT_EXPORT_HOOK/scripts/python/ns_blender_import.py</scriptPath>
                            </scriptItem>


               </subMenu>  
    </menu>
</menuDocument>