Spring Security 6.4 -> 6.5 cannot be cast to class

Describe the bug After upgrade from 6.4 -> 6.5 New implementation became unnecessarily type specific, Making configuration in the users application uncenessarily incompatible during upgrade.

postProcess (AuthenticationProvider) became post(OidcAuthorizationCodeAuthenticationProvider) causing a class cast exception

Comment From: fkowal

MR: https://github.com/spring-projects/spring-security/pull/17176

Comment From: jzheaux

Thanks for the report, @fkowal, I'll close this in favor of #17176 and we can continue coordinating over there.