docs: public UserRegistry getUserRegistry() {
          SibTr.entry(tc, CLASS_NAME + "getUserRegistry");
  
          UserRegistry userRegistry = null;
          if (getSecurityService() != null) {
              UserRegistryService userRegistryService = securityService
                              .getUserRegistryService();
              try {
                  if (userRegistryService.isUserRegistryConfigured()) {
                      userRegistry = userRegistryService.getUserRegistry();
                  } else {
                      MessagingSecurityException mse = new MessagingSecurityException();
                      FFDCFilter.processException(mse, CLASS_NAME + ".getUserRegistry", "1005", this);
                      SibTr.exception(tc, mse);
                      SibTr.error(tc, "USER_REGISTRY_NOT_CONFIGURED_MSE1005");
                  }
              } catch (RegistryException re) {
                  MessagingSecurityException mse = new MessagingSecurityException(re);
                  FFDCFilter.processException(mse, CLASS_NAME + ".getUserRegistry", "1006", this);
                  SibTr.exception(tc, mse);
                  SibTr.error(tc, "USER_REGISTRY_EXCEPTION_MSE1006");
              }
          }
  
          SibTr.exit(tc, CLASS_NAME + "getUserRegistry", userRegistry);
          return userRegistry;
      }