// for compile time type inference
public static HashSet <Entity <TScope> > GetAllEntsBy <TScope, TComp, TKey>(this ScopedContext <TScope> context, String indexName, TKey key)
where TScope : IScope
where TComp : Scope <TScope>, IGetAllEntsByIndex <TKey>
{
return(context.GetEntities(indexName, key));
}
// for compile time type inference
public static Entity <TScope> GetSingleEntBy <TScope, TComp, TKey> (this ScopedContext <TScope> context, String indexName, TKey key)
where TScope : IScope
where TComp : Scope <TScope>, IGetSingleEntByIndex <TKey>
{
return(context.GetEntities(indexName, key).SingleEntity( ));
}