Exam AD0-E716 topic 1 question 14 discussion

An Adobe Commerce developer has been asked to modify the PageBuilder slider content type to allow a new custom content type (other than slide) to be assigned as a child. The developer has already created the new content type called improved_slide in their module. They now need to create a new view/adminhtml1/pagebuilder/content_type/slider.xml file in their module to allow the new content type to be a child of slider content types.
What is the correct xml to accomplish this?