message: The ScrollView must be the fragment view, not TabBarItem
  Otherwise the cooridnatorlayout doesn't scorll properly - get a toolbar sized gap at the bottom
diff: @@ -21,6 +21,6 @@ public class TabFragment extends Fragment {
  @Nullable
  @Override
  public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
  - return tabBarItem;
  + return tabBarItem.getChildAt(0);
  }
  }
  