public class NotificationRpcApi implements IRpcApi
{
    private final NotificationRpcApi.Uris uris;

    public NotificationRpcApi()
    {
        uris = new Uris();
    }

    @Override
    public RpcApiInfo info()
    {
        return new RpcApiInfo("Notification Service", "1.0.0", uris.BaseUri);
    }

    @Override
    public Map<String, IRpcCallHandler> getCallHandlers()
    {
        //...//
        return new HashMap<>();
    }

    public class Uris
    {
        private final String BaseUri = "/api/notification";
        private final String Notify = BaseUri + "/notify";
        private final String Subscribe = BaseUri + "/subscribe";
        private final String Unsubscribe = BaseUri + "/unsubscribe";
        private final String GetNotificationTypes = BaseUri + "/notificationTypes";

        public String BaseUri()
        {
            return BaseUri();
        }

        public String Notify()
        {
            return Notify;
        }

        public String Subscribe()
        {
            return Subscribe;
        }

        public String Unsubscribe()
        {
            return Unsubscribe;
        }

        public String GetNotificationType()
        {
            return GetNotificationTypes;
        }
    }
}