ReadSoapHeader method 
    
      
  
Future<void>
ReadSoapHeader(
 
)override
     
    
  
Read the partner token soap header.
EwsXmlReader
    
  Implementation
  @override
Future<void> ReadSoapHeader(EwsXmlReader reader) async {
  await super.ReadSoapHeader(reader);
  if (this.expectPartnerToken) {
    if (reader.IsStartElementWithNamespace(
        XmlNamespace.Autodiscover, XmlElementNames.PartnerToken)) {
      this.PartnerToken = reader.ReadInnerXml();
    }
    if (reader.IsStartElementWithNamespace(
        XmlNamespace.Autodiscover, XmlElementNames.PartnerTokenReference)) {
      this.PartnerTokenReference = reader.ReadInnerXml();
    }
  }
}