CrudKit\Data\ArrayDataProvider::getSummaryColumns PHP Method

    public function getSummaryColumns()
    {
        $summaryCols = [];
        foreach ($this->summaryColumns as $column) {
            $columnData = $this->schema[$column];
            $summaryCols[] = ['key' => $column, 'label' => $columnData['label'], 'renderType' => empty($columnData['type']) ? 'string' : $columnData['type']];
        }
        return $summaryCols;
    }