public static void Index(this IInspector inspector, IInspector parentInspector, string memberName, IInspector grandParentInspector = null)
{
inspector.SetColumnsAttribute("Index", Layer.UserSupplied,
() => $"Idx_{grandParentInspector?.GetInstanceName() ?? parentInspector.GetInstanceName()}_{memberName}".ToConventionCase(),
(c) => c.Index == "___Indexable");
}