@Override
    public RegisteredService save(final RegisteredService registeredService) {
        return registeredService;
    }
This is {@link ImmutableInMemoryServiceRegistry}.

@author Misagh Moayyed
@since 5.3.0
core/cas-server-core-services-registry/src/main/java/org/apereo/cas/services/ImmutableInMemoryServiceRegistry.java