public function parseComputedColumns($item, array &$outputRow)
    {
        $columns         = $this->columnFactory->getColumns();
        $computedColumns = $this->columnFactory->getComputedColumns();

        //loop over the computed columns
        foreach ($computedColumns as $name => $column) {
            $outputRow[$name] = array(
                'raw'      => $item->{$name},
                'rendered' => $columns[$name]->renderOutput($item->{$name}, $item),
            );
        }
    }