Need Help with Designer Extension API: Fetching Form Element Names

Anyone here with experience with the designer ext API? I've fetched all the form elements on the current page with getAllElements() but no I want to print all the names of the form in the designer extension. But as far as I can see there is no method or property whatsoever to get attributes of the html element. (like https://developer-mozilla-org.translate.goog/en-US/docs/Web/API/Element/getAttribute ) You only have .getCustomAttribute() but that fetches only the custom attributes set in the designer, not the ones Webflow has set. Anyone got an idea?