void IXmlSerializable.WriteXml(XmlWriter writer)
{
var ns = GetXmlSerializerNamespaces();
writer.WriteElementString("ZProperty", ZProperty);
foreach (var value in Parties)
{
XmlSerializationHelper.SerializeElementTo(value, "Party", ManifestHeader.XmlNamespace, writer, ns);
}
writer.WriteElementString("AProperty", AProperty);
}