public OnionToggle() : base()
        {
            string     ussPath    = $"{OnionDataEditor.Path}/Editor/UIComponents/OnionToggle/OnionToggle.uss";
            StyleSheet styleSheet = AssetDatabase.LoadAssetAtPath <StyleSheet>(ussPath);

            this.styleSheets.Add(styleSheet);

            this.AddClass("onion-toggle");

            VisualElement boxRoot = this.Q(className: "unity-toggle__input");

            VisualElement box = new VisualElement()
                                .AddTo(boxRoot)
                                .AddClass("toggle-box")
                                .AddClass("pointer");

            VisualElement inBox = new VisualElement()
                                  .AddTo(boxRoot)
                                  .AddClass("toggle-inner-box")
                                  .AddClass("pointer");


            this.RegisterValueChangedCallback(n =>
            {
                box.AddClassIf("active", n.newValue);
                inBox.AddClassIf("active", n.newValue);
            });
        }