I need to add a new menu item to siteadmin under create->menu of /libs/wcm/core/content/siteadmin. Now, one way to do that might be to make a complete copy under apps/<my-app>/wcm/core/content/siteadmin which works fine. But, I would like to NOT do a deep/complete copy of siteadmin instead have my app/<my-app>/wcm/core/content/customsiteadmin extend the lib's siteadmin and be able to add the additional node that i require.
Can somebody tell me what node type/properties that I require on my customsiteadmin node to achieve the same?
PS: I have tried using sling:resourceSuperType=/libs/wcm/core/content/siteadmin to the customsideadmin node which doesn't work. I guess the sling:resourceSuperType is only for overriding script resolution? but the node that I'm trying to override is a like a content node
