reset method
void
reset()
Resets controller for reuse with a new MultiStateSheet
Implementation
void reset() {
if (_extent.isEnabled) {
_heightAnimationController?.reset();
_extent
.._offset = 0.0
..isEnabled = false
..availablePixels = 0.0
..isAnimatingOpen = false
..initialComponentSizes = const SheetWidgetSizes.zero()
..componentSizes = const SheetWidgetSizes.zero()
..behavior.reset();
notifyListeners();
}
}