public HttpResponseMessage Add(FeatureCreateRequest model) // "public method named "Add" that returns an HtttpResponseMessage, that takes one parameter named "model" of type FeatureAddRequest" { if (!ModelState.IsValid) { return(Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState)); } //instantiate a a 'feature' entity service object FeaturesService feature = new FeaturesService(); ItemResponse <int> response = new ItemResponse <int>(); response.Item = feature.Create(model); //uses featuresService return(Request.CreateResponse(HttpStatusCode.OK, response)); }