private static Stream<Map.Entry<String, String>> getClaimMappingsForPolicy(final RegisteredServiceAttributeReleasePolicy policy) {
        return policy instanceof final OidcRegisteredServiceAttributeReleasePolicy oidcPolicy
            ? oidcPolicy.getClaimMappings().entrySet().stream()
            : Stream.empty();
    }
Map OIDC claim to an attribute.
support/cas-server-support-oidc-core-api/src/main/java/org/apereo/cas/oidc/claims/OidcDefaultAttributeToScopeClaimMapper.java