cs

```
var f = new Fixture();
            f.Customize<GroupKKT>(ob => ob.Without(g => g.Kkts)
                                          .Without(g => g.GroupKKTId)
                                          .Do(g => g.GroupKKTId = f.Create<long>())
                                          .Do(g => g.Kkts = f.Build<Kkt>()
                                                             .With(k => k.GroupKKTId, g.GroupKKTId)
                                                             .CreateMany().ToList()));

            var companies = f.Build<Company>().CreateMany();