code: public boolean isSet(String propName) {
          if (propName.equals(PROP_IDENTIFIER)) {
              return isSetIdentifier();
          }
          if (propName.equals(PROP_VIEW_IDENTIFIERS)) {
              return isSetViewIdentifiers();
          }
          if (propName.equals(PROP_PARENT)) {
              return isSetParent();
          }
          if (propName.equals(PROP_CHILDREN)) {
              return isSetChildren();
          }
          if (propName.equals(PROP_GROUPS)) {
              return isSetGroups();
          }
          if (propName.equals(PROP_CREATE_TIMESTAMP)) {
              return isSetCreateTimestamp();
          }
          if (propName.equals(PROP_MODIFY_TIMESTAMP)) {
              return isSetModifyTimestamp();
          }
          if (propName.equals(PROP_ENTITLEMENT_INFO)) {
              return isSetEntitlementInfo();
          }
          if (propName.equals(PROP_CHANGE_TYPE)) {
              return isSetChangeType();
          }
          return false;
      }
docs: Returns true if the requested property is set; false, otherwise.
  
  @return
  returned object is {@link boolean }