public function columnMeta($settings)
    {
        foreach ($settings as $cName=>$cMeta) {
            if (isset($this->metaData["columns"]) && $this->metaData["columns"][$cName]) {
                $this->metaData["columns"][$cName] = array_merge(
                    $this->metaData["columns"][$cName],
                    $cMeta
                );
            }
        }
        return $this;
    }