public DescribeEventsResult unmarshall(StaxUnmarshallerContext context) throws Exception {
    DescribeEventsResult describeEventsResult = new DescribeEventsResult();
    int originalDepth = context.getCurrentDepth();
    int targetDepth = originalDepth + 1;

    if (context.isStartOfDocument()) targetDepth += 2;

    while (true) {
      XMLEvent xmlEvent = context.nextEvent();
      if (xmlEvent.isEndDocument()) return describeEventsResult;

      if (xmlEvent.isAttribute() || xmlEvent.isStartElement()) {

        if (context.testExpression("Marker", targetDepth)) {
          describeEventsResult.setMarker(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("Events", targetDepth)) {
          describeEventsResult.withEvents(new ArrayList<Event>());
          continue;
        }

        if (context.testExpression("Events/Event", targetDepth)) {
          describeEventsResult.withEvents(EventStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

      } else if (xmlEvent.isEndElement()) {
        if (context.getCurrentDepth() < originalDepth) {
          return describeEventsResult;
        }
      }
    }
  }
  @Override
  public boolean equals(Object obj) {
    if (this == obj) return true;
    if (obj == null) return false;

    if (obj instanceof DescribeEventsResult == false) return false;
    DescribeEventsResult other = (DescribeEventsResult) obj;

    if (other.getMarker() == null ^ this.getMarker() == null) return false;
    if (other.getMarker() != null && other.getMarker().equals(this.getMarker()) == false)
      return false;
    if (other.getEvents() == null ^ this.getEvents() == null) return false;
    if (other.getEvents() != null && other.getEvents().equals(this.getEvents()) == false)
      return false;
    return true;
  }