public override string Serialize()
{
string xml = "\r\n<echeckVoid";
xml += " id=\"" + SecurityElement.Escape(id) + "\"";
if (customerId != null)
{
xml += " customerId=\"" + SecurityElement.Escape(customerId) + "\"";
}
xml += " reportGroup=\"" + SecurityElement.Escape(reportGroup) + "\">";
xml += "\r\n<litleTxnId>" + litleTxnId + "</litleTxnId>";
xml += "\r\n</echeckVoid>";
return xml;
}