WriteToXml method
Writes to XML.
The writer.
Implementation
void WriteToXml(EwsServiceXmlWriter writer) {
writer.WriteStartElement(XmlNamespace.Messages, XmlElementNames.GroupBy);
writer.WriteAttributeValue(XmlAttributeNames.Order, this.SortDirection);
this.GroupOn!.WriteToXml(writer);
writer.WriteStartElement(XmlNamespace.Types, XmlElementNames.AggregateOn);
writer.WriteAttributeValue(XmlAttributeNames.Aggregate, this.AggregateType);
this.AggregateOn!.WriteToXml(writer);
writer.WriteEndElement(); // AggregateOn
writer.WriteEndElement(); // GroupBy
}