public class ViewModelLocator {
        public ViewModelLocator() {
            //if (!ViewModelBase.IsInDesignModeStatic)
            CompositionInitializer.SatisfyImports(this);
        }
 
                //If I do not use AllowDefault = true, the Design Time blows up saying it cannot
                //  match the export to the import
        [Import(AllowDefault = true)]
        public OrbitScreenViewModel SomeViewModelInstance { get; set; }