default RegisteredService save(final RegisteredService registeredService) {
        return save(registeredService, true);
    }
Register a service with CAS, or update an existing an entry.

@param registeredService the {@link RegisteredService} to update or add.
@return newly persisted {@link RegisteredService} instance
api/cas-server-core-api-services/src/main/java/org/apereo/cas/services/ServicesManager.java