Add ID into menu CLASSNAME

when i create custom menu, and i.e. there is included a category/page in the menu (as you already add word “category” or “page” in the classname), please, add the ID of that category/page too… that will be a much help.

or give us a posibility at least, if i define constant (in my functions.php) “SHOW_ID_IN_CUSTOM_MENUS” to true, then in this case. (or include slugname too.. will be good)