protected function getFormatters()
{
return ['datetime' => function ($val) {
return (double) strtotime($val) * 1000;
}, 'int' => 'intval', 'float' => 'floatval', 'raw' => function ($val) {
return $val;
}, 'string' => 'strval', 'timestamp' => function ($val) {
return (double) $val * 1000;
}];
}