public BookQuery WithPageCount(RangeQuery <int> q) => Set(x => x.PageCount = q);
public BookQuery WithScore(RangeQuery <double> q) => Set(x => x.Score = q);
public ImageQuery WithHeight(RangeQuery <int> q) => Set(x => x.Height = q);
public ImageQuery WithNoteCount(RangeQuery <int> q) => Set(x => x.NoteCount = q);
public ImageQuery WithWidth(RangeQuery <int> q) => Set(x => x.Width = q);