[WIP] Codegen errors

- [x] Remove duplication of interfaces
- [x] Fix fatal errors
Isn't this clashing with https://github.com/malukenho/ProxyManager/blob/3f8c80e2eb928db8739a64252e729a9de6c562fc/src/ProxyManager/ProxyGenerator/AccessInterceptorScopeLocalizerGenerator.php#L77-L87 ?