public void SetRootContent(ViewController viewController, SideBarMenuItem item)
        {
            _contentNavigationController.PopToRootViewController(false);
            _contentNavigationController.PushViewController(viewController, false);

            ViewModel.Selectedtem = item;
            CloseMenu();
        }
        public void SetRootContent(Fragment fragment, SideBarMenuItem item)
        {
            SupportFragmentManager.PopBackStack(RootContentBackStackEntryName, (int)PopBackStackFlags.Inclusive);
            SupportFragmentManager
            .BeginTransaction()
            .Replace(Resource.Id.content_layout, fragment)
            .AddToBackStackIf(item != ViewModel.DefaultItem, RootContentBackStackEntryName)
            .Commit();

            ViewModel.Selectedtem = item;
            TryCloseDrawer();
        }