private function getAvailableColumns(): array
    {
        $availableColumns = [];

        foreach ($this->config->getColumns() as $identifier => $columnData) {
            $availableColumns[] = [
                'id' => $identifier,
                'name' => $this->translator->trans($columnData['name'], [], 'ngcb'),
            ];
        }

        return $availableColumns;
    }