[keycloak-user] OPENID Java Client

I was looking at keykloak examples for client credentials flow examples, and it looks like the everything required is located in adapter-core module, especially AdapterRSATokenVerifier and ServerRequest classes. But I wonder if it safe to use this module in terms of API stability and documentation, or I should better stick to some 3rd party OpenID client, that will do all the fancy things with token validation, key retrieval, caching etc. Best Regards, Vitalii