PortableRest.RestRequest.AddQueryString C# (CSharp) Method

        public void AddQueryString(string key, object value)
        {
            AddQueryString(key, value.ToString());
        }

 /// <summary>
 /// 
 /// </summary>
 /// <returns></returns>
 public async Task<AdditionalImagesList> GetAdditionalImages(int setId)
 {
     var request = new RestRequest("getAdditionalImages", HttpMethod.Get)
     {
         ContentType = ContentTypes.Xml,
         IgnoreXmlAttributes = true
     };
     request.AddQueryString("apiKey", ApiId);
     request.AddQueryString("setID", setId);
     //RWM: Using this version handles null results and gives you access to possible exceptions.
     var results = await SendAsync<AdditionalImagesList>(request);
     return results.Content;
 }