title: how to show ModelBottomSheet from top
body: <p>guys! ModelBottomSheet shows from bottom. Is there any way to show it from top. or is there another alternate widget for that function.
  Actually I want to add a filter with a search bar. When I click on it something like ModelSheet should open from top. Please guide me
  <a href="https://i.stack.imgur.com/BeP9v.png" rel="nofollow noreferrer">I've added picture of what I want to build.</a></p>