public void ChangeSelectedElementForOptionsWindow(EditorWindowViewModel editorWindowViewModel)
 {
   SelectedEditorWindowViewModel = editorWindowViewModel;
   PropertiesWindowViewModel.ChangeSelectedElementForOptionsWindow(editorWindowViewModel);
   //var editorWindowViewModel = EditorWindows.FirstOrDefault();
   //editorWindowViewModel.SelectionService.CurrentSelection
 }
    public void ChangeSelectedElementForOptionsWindow(EditorWindowViewModel editorWindowViewModel)
    {
      if (ReferenceEquals(currentSelectionService, editorWindowViewModel.SelectionService))
        return;

      if (currentSelectionService != null)
        currentSelectionService.CurrentSelection.CollectionChanged -= onSelectionChanged;

      currentSelectionService = editorWindowViewModel.SelectionService;
      currentSelectionService.CurrentSelection.CollectionChanged += onSelectionChanged;
    }