private void SetAppBarMode(AppBarModeEnum newMode)
        {
            if (this.AppBarMode == newMode)
            {
                return;
            }
            this.AppBarMode = newMode;

            RefreshAppBar();
        }
        private void SetAppBarMode(AppBarModeEnum newMode)
        {
            if (this.AppBarMode == newMode)
            {
                return;
            }
            this.AppBarMode = newMode;

            RefreshAppBar();
        }