[Test]
        public void SelectMany_with_collection_selector_with_a_transparent_identifier()
        {
            var query = from x in CreateQuery()
                        from y in x.G
                        orderby x.Id
                        select new { x.B, y };

            Assert(query,
                4,
                "{ $unwind: '$G' }",
                "{ $project: { G: '$G', _id: 0 } }");
        }