System Events: How to access menu items of pop up buttons?

How can I access the menu items of a pop up button?

asking for the properties shows no menus or menu items.
Is this possible anyway?

tell application “System Events”
tell process “Finder”

	set b to properties of pop up button of window "Finder-Einstellungen"
	return b
end tell

end tell

You ask for some menu item. What is its name? I ask, because you can get and set some preferences of Finder without GUI scripting.

tell application "Finder"
	tell Finder preferences
	end tell
end tell

In fact, i am only trying with the Finder. It is meant for general use.

But there seems to be no properties for that. Also the Accessibility inspector gets no info…