public async Task <List <KeyValuePair <InternalDebtModel, ExternalDebtModel> > > GetDebtModels() { string url = "https://www.transparency.treasury.gov/services/api/fiscal_service/v1/accounting/od/debt_to_penny?sort=-data_date&format=json"; using (HttpResponseMessage response = await _client.Client.GetAsync(url)) { if (response.IsSuccessStatusCode) { string modelsString = await response.Content.ReadAsStringAsync(); DebtAPIArray models = JsonConvert.DeserializeObject <DebtAPIArray>(modelsString); var output = new List <KeyValuePair <InternalDebtModel, ExternalDebtModel> >(); foreach (DebtAPIModel model in models.data) { output.Add(_converter.ConvertModelFromAPI(model)); } return(output); } else { throw new Exception(response.ReasonPhrase); } } }