public StemsEngineSubContext([NotNull] Stem <TItem> stem)
{
var implementations = stem.Services.ServiceGroup
.GetProvider(stem.GetType())
.GetService <EngineImplementations <TItem> >();
Identifiers = new AttributeIdentifierProvider <TItem>(stem, implementations);
Fields = new AttributeFieldProvider <TItem>(stem, implementations);
AuthorizationChecker = new StemAuthorizationChecker <TItem>(stem, implementations);
}
private static AttributeFieldProvider <Artist> CreateProvider(Stem <Artist> stem)
{
return(new AttributeFieldProvider <Artist>(stem,
stem.Services.ServiceGroup.GetProvider(stem.GetType()).GetService <EngineImplementations <Artist> >()));
}