如何仅用AnchorableWindows -无DocumentPane填充AvalonDock 2.0应用程序

I simply would like to fill AvalonDock application only with "Tool" windows without any document. I can manually minimize the documentpane area but if possible, I would like to fill that small area with another anchorable window so that LayoutDocumentPane's width and height are zero. I simply would like to fill AvalonDock applicat