private void checkValidity()
    {
        SketchfabPlugin.CheckValidity((int)descSize.x, (int)descSize.y);

        if (_api == null)
        {
            setupAPI();
        }
    }
    private void checkValidity()
    {
        SketchfabPlugin.CheckValidity();
        if (_importer == null)
        {
            Initialize();
        }

        if (_api == null)
        {
            setupAPI();
        }
    }