public static void MenuTreeViewEditor()
        {
            var editor = EditorWindow.GetWindow(typeof(iCS_TreeViewEditorWindow), false, "Tree View");

            EditorWindow.DontDestroyOnLoad(editor);
            editor.hideFlags = HideFlags.DontSave;
        }
        public static void MenuLibraryEditor()
        {
            // -- Adjust default size when first opened --        // -- Adjust default size when first opened --
            var width  = 1280f;
            var height = 800f;
            var r      = new Rect(0.2f * width, 0.2f * height, 0.2f * width, 0.6f * height);
            var editor = EditorWindow.GetWindowWithRect(typeof(iCS_LibraryEditorWindow), r, false, "Library");

            editor.maxSize = new Vector2(5120f, 2880f);
            editor.minSize = new Vector2(50f, 50f);
            EditorWindow.DontDestroyOnLoad(editor);
            editor.hideFlags = HideFlags.DontSave;
        }