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

    if (context.isStartOfDocument()) targetDepth += 1;

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

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

        if (context.testExpression("instanceId", targetDepth)) {
          instance.setInstanceId(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("imageId", targetDepth)) {
          instance.setImageId(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("instanceState", targetDepth)) {
          instance.setState(InstanceStateStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("privateDnsName", targetDepth)) {
          instance.setPrivateDnsName(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("dnsName", targetDepth)) {
          instance.setPublicDnsName(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("reason", targetDepth)) {
          instance.setStateTransitionReason(
              StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("keyName", targetDepth)) {
          instance.setKeyName(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("amiLaunchIndex", targetDepth)) {
          instance.setAmiLaunchIndex(IntegerStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("productCodes/item", targetDepth)) {
          instance.withProductCodes(ProductCodeStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("instanceType", targetDepth)) {
          instance.setInstanceType(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("launchTime", targetDepth)) {
          instance.setLaunchTime(DateStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("placement", targetDepth)) {
          instance.setPlacement(PlacementStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("kernelId", targetDepth)) {
          instance.setKernelId(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("ramdiskId", targetDepth)) {
          instance.setRamdiskId(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("platform", targetDepth)) {
          instance.setPlatform(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("monitoring", targetDepth)) {
          instance.setMonitoring(MonitoringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("subnetId", targetDepth)) {
          instance.setSubnetId(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("vpcId", targetDepth)) {
          instance.setVpcId(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("privateIpAddress", targetDepth)) {
          instance.setPrivateIpAddress(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("ipAddress", targetDepth)) {
          instance.setPublicIpAddress(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("stateReason", targetDepth)) {
          instance.setStateReason(StateReasonStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("architecture", targetDepth)) {
          instance.setArchitecture(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("rootDeviceType", targetDepth)) {
          instance.setRootDeviceType(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("rootDeviceName", targetDepth)) {
          instance.setRootDeviceName(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("blockDeviceMapping/item", targetDepth)) {
          instance.withBlockDeviceMappings(
              InstanceBlockDeviceMappingStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("virtualizationType", targetDepth)) {
          instance.setVirtualizationType(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("instanceLifecycle", targetDepth)) {
          instance.setInstanceLifecycle(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("spotInstanceRequestId", targetDepth)) {
          instance.setSpotInstanceRequestId(
              StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("clientToken", targetDepth)) {
          instance.setClientToken(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("tagSet/item", targetDepth)) {
          instance.withTags(TagStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("groupSet/item", targetDepth)) {
          instance.withSecurityGroups(
              GroupIdentifierStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("sourceDestCheck", targetDepth)) {
          instance.setSourceDestCheck(BooleanStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("hypervisor", targetDepth)) {
          instance.setHypervisor(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("networkInterfaceSet/item", targetDepth)) {
          instance.withNetworkInterfaces(
              InstanceNetworkInterfaceStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("iamInstanceProfile", targetDepth)) {
          instance.setIamInstanceProfile(
              IamInstanceProfileStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("ebsOptimized", targetDepth)) {
          instance.setEbsOptimized(BooleanStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }

        if (context.testExpression("sriovNetSupport", targetDepth)) {
          instance.setSriovNetSupport(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
      } else if (xmlEvent.isEndElement()) {
        if (context.getCurrentDepth() < originalDepth) {
          return instance;
        }
      }
    }
  }
  public NetworkInterface unmarshall(StaxUnmarshallerContext context) throws Exception {
    NetworkInterface networkInterface = new NetworkInterface();
    int originalDepth = context.getCurrentDepth();
    int targetDepth = originalDepth + 1;

    if (context.isStartOfDocument()) targetDepth += 1;

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

      if (xmlEvent.isAttribute() || xmlEvent.isStartElement()) {
        if (context.testExpression("networkInterfaceId", targetDepth)) {
          networkInterface.setNetworkInterfaceId(
              StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("subnetId", targetDepth)) {
          networkInterface.setSubnetId(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("vpcId", targetDepth)) {
          networkInterface.setVpcId(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("availabilityZone", targetDepth)) {
          networkInterface.setAvailabilityZone(
              StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("description", targetDepth)) {
          networkInterface.setDescription(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("ownerId", targetDepth)) {
          networkInterface.setOwnerId(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("requesterId", targetDepth)) {
          networkInterface.setRequesterId(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("requesterManaged", targetDepth)) {
          networkInterface.setRequesterManaged(
              BooleanStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("status", targetDepth)) {
          networkInterface.setStatus(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("macAddress", targetDepth)) {
          networkInterface.setMacAddress(StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("privateIpAddress", targetDepth)) {
          networkInterface.setPrivateIpAddress(
              StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("privateDnsName", targetDepth)) {
          networkInterface.setPrivateDnsName(
              StringStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("sourceDestCheck", targetDepth)) {
          networkInterface.setSourceDestCheck(
              BooleanStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("groupSet/item", targetDepth)) {
          networkInterface
              .getGroups()
              .add(GroupIdentifierStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("attachment", targetDepth)) {
          networkInterface.setAttachment(
              NetworkInterfaceAttachmentStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("association", targetDepth)) {
          networkInterface.setAssociation(
              NetworkInterfaceAssociationStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("tagSet/item", targetDepth)) {
          networkInterface.getTagSet().add(TagStaxUnmarshaller.getInstance().unmarshall(context));
          continue;
        }
        if (context.testExpression("privateIpAddressesSet/item", targetDepth)) {
          networkInterface
              .getPrivateIpAddresses()
              .add(
                  NetworkInterfacePrivateIpAddressStaxUnmarshaller.getInstance()
                      .unmarshall(context));
          continue;
        }
      } else if (xmlEvent.isEndElement()) {
        if (context.getCurrentDepth() < originalDepth) {
          return networkInterface;
        }
      }
    }
  }