https://access.redhat.com/webassets/avalon/d/red_hat_build_of_keycloak-26/javadocs/org/keycloak/validation/ValidationUtil.ErrorHandler.html
ValidationUtil.ErrorHandler (Keycloak Docs Distribution 26.0.17.redhat-00001 API)
declaration: package: org.keycloak.validation, class: ValidationUtil, interface: ErrorHandler
errorhandlerkeycloakdocsdistribution