public async Task <PaymentsModel> GetByNumber(int number)
{
PaymentsModel num = null;
if (number < 0)
{
throw new InvalidOperationException("Number can't be 0");
}
num = await uploader.GetByNumber(number).ConfigureAwait(false);
if (num == null)
{
throw new HttpResponseException(HttpStatusCode.NotFound);
}
return(num);
}