static Sidebar Create()
        {
            Rect    rect     = new Rect(0, 0, SIDEBAR_WIDTH, 64);
            Sidebar instance = (Sidebar)EditorWindow.GetWindowWithRect(typeof(Sidebar), rect, false, "");
            Vector2 minSize  = instance.minSize;

            minSize.x        = SIDEBAR_WIDTH;
            minSize.y        = 0;
            instance.minSize = minSize;
            Vector2 maxSize = instance.maxSize;

            maxSize.x        = SIDEBAR_WIDTH;
            instance.maxSize = maxSize;
            instance.Dock();
            return(instance);
        }