https://docs.spring.io/spring-security/site/docs/current-SNAPSHOT/api/org/springframework/security/test/web/reactive/server/SecurityMockServerConfigurers.OAuth2ClientMutator.html
SecurityMockServerConfigurers.OAuth2ClientMutator (spring-security-docs 7.0.1-SNAPSHOT API)
declaration: package: org.springframework.security.test.web.reactive.server, class: SecurityMockServerConfigurers, class: OAuth2ClientMutator
spring securitydocssnapshotapi