public (OperationStatus status, Film value) GetByTitleAndYear(string title, short year)
{
ISpecification <Film> spec = new FilmByTitleAndYear(title, year);
var(status, value) = List(spec);
var f = value.SingleOrDefault();
return(status, f);
}
public Film GetByTitleAndYear(string title, short year)
{
var spec = new FilmByTitleAndYear(title, year);
return(List(spec).FirstOrDefault());
}