popSheet static method
Pops the entire enclosing StreamSheetRoute, if one is in the stack.
Useful when the sheet uses nested navigation (see the
useNestedNavigation parameter on showStreamSheet) and you want to
dismiss the whole sheet at once instead of just the current nested
route.
Implementation
static void popSheet(BuildContext context) {
final scope = _StreamSheetScope.maybeOf(context);
final route = scope?.route;
if (route == null) return;
final navigator = route.navigator;
if (navigator == null) return;
if (navigator.canPop()) navigator.pop();
}