handlePop method
Implementation
void handlePop(Route route, Route? previousRoute) {
_flutterPageMap.remove(route);
if (previousRoute != null) {
if (_flutterPageMap.containsKey(previousRoute)) {
FlutterPage previousPage = _flutterPageMap[previousRoute]!;
if (previousPage.route != null && previousPage.widget != null) {
_flutterPageCache[previousRoute] = previousPage;
}
} else {
_flutterPageMap[previousRoute] = FlutterPage.tempPage();
}
}
}