private static void InsRelacao(this IAbstractDataContext context, object obj, RelacaoAttribute relacao, bool inRelacao)
        {
            if (relacao == null)
            {
                return;
            }

            if (obj is IList)
            {
                context.InsLista(obj as IList, inRelacao);
            }
            else if (obj is object)
            {
                context.InsObjeto(obj as object);
            }
        }