!!! need to use this instead of the deprecated spring-security-oauth
    https://github.com/spring-projects/spring-security/wiki/OAuth-2.0-Migration-Guide
    https://github.com/jgrandja/spring-security-oauth-5-2-migrate
        https://github.com/jgrandja/spring-security-oauth-5-2-migrate/blob/master/resource-server/src/main/java/org/springframework/security/oauth/samples/config/ResourceServerConfig.java

https://docs.spring.io/spring-security-oauth2-boot/docs/current/reference/htmlsingle/

If you have spring-security-oauth2 on your classpath, you can take advantage of some auto-configuration to simplify setting up Authorization and Resource Servers.
For full details, see the Spring Security OAuth 2 Developers Guide.

The following projects are in maintenance mode:

    spring-security-oauth2
    spring-security-oauth2-autoconfigure 


https://docs.spring.io/spring-security-oauth2-boot/docs/current/reference/htmlsingle/#boot-features-security-oauth2-single-sign-on
https://docs.spring.io/spring-security-oauth2-boot/docs/current/reference/htmlsingle/#boot-features-security-custom-user-info-client
    https://projects.spring.io/spring-security-oauth/docs/oauth2.html