public List <Release> GetReleasesByArtistId(String artistId)
        {
            string resourceFullURL = GetReleaseURL(artistId);

            Task <String> xmlResponseTask = webServiceClient.GetRequest(resourceFullURL);

            string xmlResponse = xmlResponseTask.Result;

            return(ReleaseProcessor.GetList(xmlResponse, artistId));
        }
        public List <Release> GetAlbumsByArtistId(String artistId)
        {
            string resourceFullURL = GetAlbumURL(artistId);

            Task <String> xmlResponseTask = webServiceClient.GetRequest(resourceFullURL);

            string xmlResponse = xmlResponseTask.Result;

            if (string.IsNullOrEmpty(xmlResponse))
            {
                throw new Exception("Error processing request.");
            }

            return(ReleaseProcessor.GetList(xmlResponse, artistId));
        }