public Task <Response <Payment> > CancelAsync(CancelPaymentRequest request)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
if (string.IsNullOrWhiteSpace(request.Id))
{
throw new ArgumentException("Value is null, empty or whitespace.", nameof(request.Id));
}
return(PostAsync <Response <Payment> >(
$"payments/{request.Id}/actions/cancel",
new { payments = request }
));
}
