/**
*
*/
public MarkInvoiceAsUnpaidResponse MarkInvoiceAsUnpaid(MarkInvoiceAsUnpaidRequest MarkInvoiceAsUnpaidRequest, string apiUsername)
{
string resp = call("MarkInvoiceAsUnpaid", MarkInvoiceAsUnpaidRequest.toNVPString(""), apiUsername);
NVPUtil util = new NVPUtil();
return(new MarkInvoiceAsUnpaidResponse(util.parseNVPString(resp), ""));
}
