[nhusers] problem similar to this https://nhibernate.jira.com/browse/NH-3186

[Gof]

1 nhibernate 5.0.3
.Query<XmlFid>()
.Cacheable()
.CacheMode(CacheMode.Normal)
.Fetch(x => x.User)
.SingleOrDefault(d => d.Id == 1);

error: Parameter 'inputInfo' has type
'Remotion.Linq.Clauses.StreamedData.StreamedSingleValueInfo' when type
'Remotion.Linq.Clauses.StreamedData.StreamedSequenceInfo' was expected.

https://nhibernate.jira.com/browse/NH-3186

2 .Query<XmlFid>()
.Cacheable()
.CacheMode(CacheMode.Normal)
.Fetch(x => x.User)
.FirstOrDefault();