docs: @Override
      public MessagingAuthorizationService getMessagingAuthorizationService() {
          SibTr.entry(tc, CLASS_NAME + "getMessagingAuthorizationService");
  
          if (sibAuthorizationService == null) {
              sibAuthorizationService = new MessagingAuthorizationServiceImpl(this);
          }
  
          SibTr.exit(tc, CLASS_NAME + "getMessagingAuthorizationService", sibAuthorizationService);
          return sibAuthorizationService;
      }