Step 3

ProjectBudgetsFunction.cs

var httpClient = new HttpClient();
var tenant = config["Tenant"];
var apiKey = config["ApiKey"];
var baseUrl = config["BaseUrl"];
var requestUrl = string.Format(baseUrl, tenant, "projects.json?", apiKey);
var response = await httpClient.GetStringAsync(requestUrl);
var projects = (JsonConvert.DeserializeObject<IEnumerable<ProjectWrapper>>(response)).Select(wrapper => wrapper.Project);