internal override void SetXML(XmlElement xml, BaseClassIfc host, HashSet<int> processed)
{
base.SetXML(xml, host, processed);
XmlElement element = xml.OwnerDocument.CreateElement("Polygon");
xml.AppendChild(element);
foreach (IfcCartesianPoint p in Polygon)
element.AppendChild(p.GetXML(xml.OwnerDocument, "", this, processed));
}