使用Scrollview作为CoordinatorLayout的子项，工具栏不会崩溃

I am trying to follow the Google Docs on using the CoordinatorLayout but i am having an issue with the ScrollView inside the CoordinatorLayout. Basically, the Toolbar normally would collapse with a RecyclerView or a Listview when scrolling down. Now with a ScrollView it will not collapse. I am trying to follow the Google Docs on using