/**
*
*/
public CancelInvoiceResponse CancelInvoice(CancelInvoiceRequest CancelInvoiceRequest, string apiUsername)
{
string resp = call("CancelInvoice", CancelInvoiceRequest.toNVPString(""), apiUsername);
NVPUtil util = new NVPUtil();
return new CancelInvoiceResponse(util.parseNVPString(resp), "");
}
