Popover menu

The only allowed menu items elements are a, button and span for the checkbox and radio only.
You need to put the entire menu just after the three dot icon
You do not need JS, CSS only is ok for positioning. JS is still required to handle the hide/show.
Only one ul is allowed.
Only one level of menu is allowed.
Every entry needs to have its own icon. This greatly improves the UX.
The element must have the class.
The checkbox/radio must use the nextcloud custom
The form element is optionnal if you’re using inputs.
Supported inputs are all text based ones and buttons type ones