public static ims.emergency.domain.objects.Tracking extractTracking(
      ims.domain.ILightweightDomainFactory domainFactory,
      ims.emergency.vo.TrackingForSeenByHCPVo valueObject,
      HashMap domMap) {
    if (null == valueObject) {
      return null;
    }
    Integer id = valueObject.getID_Tracking();
    ims.emergency.domain.objects.Tracking domainObject = null;
    if (null == id) {
      if (domMap.get(valueObject) != null) {
        return (ims.emergency.domain.objects.Tracking) domMap.get(valueObject);
      }
      // ims.emergency.vo.TrackingForSeenByHCPVo ID_Tracking field is unknown
      domainObject = new ims.emergency.domain.objects.Tracking();
      domMap.put(valueObject, domainObject);
    } else {
      String key = (valueObject.getClass().getName() + "__" + valueObject.getID_Tracking());
      if (domMap.get(key) != null) {
        return (ims.emergency.domain.objects.Tracking) domMap.get(key);
      }
      domainObject =
          (ims.emergency.domain.objects.Tracking)
              domainFactory.getDomainObject(ims.emergency.domain.objects.Tracking.class, id);

      // TODO: Not sure how this should be handled. Effectively it must be a staleobject exception,
      // but maybe should be handled as that further up.
      if (domainObject == null) return null;

      domMap.put(key, domainObject);
    }
    domainObject.setVersion(valueObject.getVersion_Tracking());

    ims.core.patient.domain.objects.Patient value1 = null;
    if (null != valueObject.getPatient()) {
      if (valueObject.getPatient().getBoId() == null) {
        if (domMap.get(valueObject.getPatient()) != null) {
          value1 = (ims.core.patient.domain.objects.Patient) domMap.get(valueObject.getPatient());
        }
      } else if (valueObject.getBoVersion()
          == -1) // RefVo was not modified since obtained from the Assembler, no need to update the
                 // BO field
      {
        value1 = domainObject.getPatient();
      } else {
        value1 =
            (ims.core.patient.domain.objects.Patient)
                domainFactory.getDomainObject(
                    ims.core.patient.domain.objects.Patient.class,
                    valueObject.getPatient().getBoId());
      }
    }
    domainObject.setPatient(value1);
    // SaveAsRefVO - treated as a refVo in extract methods
    ims.emergency.configuration.domain.objects.TrackingArea value2 = null;
    if (null != valueObject.getCurrentArea()) {
      if (valueObject.getCurrentArea().getBoId() == null) {
        if (domMap.get(valueObject.getCurrentArea()) != null) {
          value2 =
              (ims.emergency.configuration.domain.objects.TrackingArea)
                  domMap.get(valueObject.getCurrentArea());
        }
      } else {
        value2 =
            (ims.emergency.configuration.domain.objects.TrackingArea)
                domainFactory.getDomainObject(
                    ims.emergency.configuration.domain.objects.TrackingArea.class,
                    valueObject.getCurrentArea().getBoId());
      }
    }
    domainObject.setCurrentArea(value2);
    domainObject.setCurrentStatus(
        ims.emergency.vo.domain.TrackingAttendanceStatusVoAssembler.extractTrackingAttendanceStatus(
            domainFactory, valueObject.getCurrentStatus(), domMap));
    domainObject.setIsDischarged(valueObject.getIsDischarged());
    domainObject.setSeenBy(
        ims.emergency.vo.domain.SeenByHCPVoAssembler.extractSeenByHCP(
            domainFactory, valueObject.getSeenBy(), domMap));
    domainObject.setTriageDetails(
        ims.emergency.vo.domain.TriageForSeenByHcpVoAssembler.extractTriage(
            domainFactory, valueObject.getTriageDetails(), domMap));
    domainObject.setSeenByNurse(
        ims.emergency.vo.domain.SeenByHCPVoAssembler.extractSeenByHCP(
            domainFactory, valueObject.getSeenByNurse(), domMap));
    domainObject.setAttendance(
        ims.emergency.vo.domain.AttendanceForSeenByHCPVoAssembler.extractEmergencyAttendance(
            domainFactory, valueObject.getAttendance(), domMap));

    return domainObject;
  }