The signature of the method that provides BuildContext
and bottomSheetOffset for determining the position of the BottomSheet
relative to the upper border of the screen.
bottomSheetOffset - fractional value of offset.
The signature of a method that provides a BuildContext
and bottomSheetOffset for determining the position of the BottomSheet
relative to the upper border of the screen.
bottomSheetOffset - fractional value of offset.
The signature of a method that provides a BuildContext and
ScrollController for building a widget that may overflow the draggable
Axis of the containing FlexibleDraggableScrollSheet.