docs: @Reference(policy = ReferencePolicy.DYNAMIC, cardinality = ReferenceCardinality.MULTIPLE, target = "(!(com.ibm.ws.security.registry.type=QuickStartSecurityRegistry))")
      protected synchronized void setUserRegistry(ServiceReference<UserRegistry> ref) {
          urs.add(ref);
          unregisterQuickStartSecurityRegistryConfiguration();
          unregisterQuickStartSecurityAdministratorRole();
      }