productName	orderYear	orderQuarter	dollar_sales
1937 Lincoln Berline	2003	1	3726.45
1936 Mercedes-Benz 500K Special Roadster	2003	1	1768.3300000000002
1952 Alpine Renault 1300	2003	1	5571.8
1962 LanciaA Delta 16V	2003	1	5026.14
1958 Setra Bus	2003	1	3284.28

->pipe(new Map(array(
    '{value}' => function($row, $metaData) {
        $row['orderQuarter'] = 'Q ' . $row['orderQuarter'];
        return array($row);
    },
    '{meta}' => function($metaData) {
        $metaData['columns']['productName'] = array(
            'label' => 'Products',
        );
        $metaData['columns']['orderYear'] = array(
            'label' => 'Year',
            'type' => 'string',
        );
        $metaData['columns']['orderQuarter'] = array(
            'label' => 'Quarter',
            'type' => 'string',
        );
        $metaData['columns']['dollar_sales'] = array(
            'label' => 'Sales',
            'type' => 'number',
            "prefix" => "$",
        );
        return $metaData;
    },
)))