public HttpResponseMessage GetSourceNodes()
        {
            var sourceNodes = _entityLogic.GetAll(c => c.Scheme);

            return(Request.CreateResponse(HttpStatusCode.OK, sourceNodes));
        }
        public HttpResponseMessage GetRoutes()
        {
            var routes = _entityLogic.GetAll(c => c.SinkNode);

            return(Request.CreateResponse(HttpStatusCode.OK, routes));
        }