protected final function _duplicateDependentModel($newRow, $rule, $select = array())
    {
        $rowset = $this->getChildRows($rule, $select);
        foreach ($rowset as $row) {
            $ref = $row->getModel()->getReferenceByModelClass(get_class($this->getModel()), null);
            $data = array();
            $data[$ref['column']] = $newRow->{$this->_getPrimaryKey()};
            $row->duplicate($data);
        }
    }