AddSourceIdentifierToSubscriptionResult.fromXml constructor
      
      AddSourceIdentifierToSubscriptionResult.fromXml(
    
    
- XmlElement elem
Implementation
factory AddSourceIdentifierToSubscriptionResult.fromXml(_s.XmlElement elem) {
  return AddSourceIdentifierToSubscriptionResult(
    eventSubscription: _s
        .extractXmlChild(elem, 'EventSubscription')
        ?.let((e) => EventSubscription.fromXml(e)),
  );
}