internal override void ParseXml(XmlElement xml)
{
base.ParseXml(xml);
if (xml.HasAttribute("Prefix"))
Enum.TryParse<IfcSIPrefix>(xml.Attributes["Prefix"].Value, true, out mPrefix);
if (xml.HasAttribute("Name"))
Enum.TryParse<IfcSIUnitName>(xml.Attributes["Name"].Value, true, out mName);
}