public static void OnToolbarItemPropertyChanged( this AToolbar toolbar, PropertyChangedEventArgs e, IEnumerable <ToolbarItem> toolbarItems, Context context, Color?tintColor, PropertyChangedEventHandler toolbarItemChanged) { if (toolbarItems == null) { return; } if (e.IsOneOf(MenuItem.TextProperty, MenuItem.IconImageSourceProperty, MenuItem.IsEnabledProperty)) { toolbar.UpdateMenuItems(toolbarItems, context, tintColor, toolbarItemChanged); } }