public function handleMetaChange($strMetaName, $varNewValue)
    {
        // By default we accept any change of meta information.
        if ($strMetaName == 'colname') {
            if ($this->get($strMetaName) != $varNewValue) {
                $this->renameColumn($varNewValue);
            }
            return $this;
        }
        return parent::handleMetaChange($strMetaName, $varNewValue);
    }