https://docs.spring.io/spring-security/site/docs/current/reference/

https://docs.spring.io/spring-security/reference/servlet/oauth2/index.html

https://docs.spring.io/spring-security/reference/servlet/oauth2/resource-server/jwt.html
https://github.com/spring-projects/spring-security/tree/main/docs/modules/ROOT/pages/servlet/oauth2
https://github.com/spring-projects/spring-security/blob/main/docs/modules/ROOT/pages/servlet/oauth2/resource-server/jwt.adoc

https://github.com/spring-projects/spring-security/blob/main/docs/modules/ROOT/pages/servlet/oauth2/login/advanced.adoc
    protocol endpoints
        https://datatracker.ietf.org/doc/html/rfc6749#section-3
        https://openid.net/specs/openid-connect-core-1_0.html#UserInfo