FnGetAccountCounts

[FunctionName("FnGetAccountCounts")]
public async Task<IActionResult> GetAccountCounts(
   [HttpTrigger(AuthorizationLevel.Anonymous, "get", Route = "accounts/{key}")] HttpRequest req,
   [Blob("hgv-ad-players/{key}.json")]TextReader reader,
   string key,
   ILogger log)
{
    if(reader == null)
        return new NotFoundResult();

    var json = await reader.ReadToEndAsync();
    return new OkObjectResult(json);
}