> List.init 3 (fun _ -> System.Guid.NewGuid());;
val it : Guid list =
[447acb0c-092e-4f85-9c3a-d369e4539dae; 5f41c04d-9bc0-4e96-8165-76b41fe8cd93;
1086400c-72ff-4763-9bb9-27e17bd4c7d2]