private static async void PropertyChangedCallbackAsync(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs dependencyPropertyChangedEventArgs)
{
//if (!DesignerProperties.GetIsInDesignMode(dependencyObject))
//{
// return;
//}
var frameworkElement = dependencyObject.Cast <FrameworkElement>();
var newType = dependencyPropertyChangedEventArgs.NewValue.Cast <Type>();
var taskResult = await Task.Run(() => newType.Create(RandomDefaultData, ObjectCreationStrategy));
frameworkElement.DataContext = taskResult;
}
