public static ims.core.resource.people.domain.objects.Gp extractGp(
      ims.domain.ILightweightDomainFactory domainFactory,
      ims.core.vo.GPNTPFVo valueObject,
      HashMap domMap) {
    if (null == valueObject) {
      return null;
    }
    Integer id = valueObject.getID_Gp();
    ims.core.resource.people.domain.objects.Gp domainObject = null;
    if (null == id) {
      if (domMap.get(valueObject) != null) {
        return (ims.core.resource.people.domain.objects.Gp) domMap.get(valueObject);
      }
      // ims.core.vo.GPNTPFVo ID_Gp field is unknown
      domainObject = new ims.core.resource.people.domain.objects.Gp();
      domMap.put(valueObject, domainObject);
    } else {
      String key = (valueObject.getClass().getName() + "__" + valueObject.getID_Gp());
      if (domMap.get(key) != null) {
        return (ims.core.resource.people.domain.objects.Gp) domMap.get(key);
      }
      domainObject =
          (ims.core.resource.people.domain.objects.Gp)
              domainFactory.getDomainObject(ims.core.resource.people.domain.objects.Gp.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_Gp());

    domainObject.setName(
        ims.core.vo.domain.PersonNameAssembler.extractPersonName(
            domainFactory, valueObject.getName(), domMap));
    domainObject.setPractices(
        ims.core.vo.domain.GPToPracticeNTPFVoAssembler.extractGpToPracticeSet(
            domainFactory, valueObject.getPractices(), domainObject.getPractices(), domMap));
    domainObject.setCodeMappings(
        ims.core.vo.domain.TaxonomyMapAssembler.extractTaxonomyMapList(
            domainFactory, valueObject.getCodeMappings(), domainObject.getCodeMappings(), domMap));

    return domainObject;
  }