# Advanced Topics

The chapters below cover some more advanced scenarios.

- [Introspection](introspection.md)
- [Non-struct objects](non_struct_objects.md)
- [Implicit and explicit null](implicit_and_explicit_null.md)
- [Objects and generics](objects_and_generics.md)
- [Multiple operations per request](multiple_ops_per_request.md)
- [Dataloaders](dataloaders.md)
- [Subscriptions](subscriptions.md)