https://www.keycloak.org/docs-api/latest/javadocs/org/keycloak/protocol/oidc/mappers/AcrProtocolMapper.html
AcrProtocolMapper (Keycloak Docs Distribution 26.6.2 API)
declaration: package: org.keycloak.protocol.oidc.mappers, class: AcrProtocolMapper
keycloakdocsdistributionapi