private static FrameworkElement GetControlInternal(IHostedControlViewModel viewModel)
 {
     var exportType = typeof (IView<>).MakeGenericType(viewModel.GetType());
     var element = (FrameworkElement)OpenGenericGetExportedValue.MakeGenericMethod(exportType).Invoke(Container, null);
     element.DataContext = viewModel;
     return element;
 }
 public static FrameworkElement GetControl(IHostedControlViewModel viewModel)
 {
     return HostedControlLookup.GetOrAdd(viewModel, GetControlInternal);
 }