private void OnPropertyMarkerCommandsCustomExpressionCommand(object sender, ExecutedRoutedEventArgs eventArgs)
{
SceneNodeProperty associatedProperty = this.AssociatedProperty;
if (associatedProperty != null)
{
using (WorkaroundPopup.LockOpen((DependencyObject)this))
{
associatedProperty.DoEditCustomExpression((FrameworkElement)this);
PropertyMarker.ResetPropertyContainerMode((RoutedEventArgs)eventArgs);
}
}
eventArgs.Handled = true;
}