Weird Importer

public static function getChunkSize(): int
    {
        return 100;
    }

    public static function getColumns(): array
    {
        return [
            'reference' => ImportColumn::make('reference')
                ->requiredMapping()
                ->rules(['required', 'max:255']),
        ];
    }

    public function resolveRecord(): ?Driver
    {
        return Driver::firstOrNew([
            // Update existing records, matching them by `$this->data['column_name']`
            'reference' => $this->data['reference'],
        ]);

        // return new Driver();
    }

    public static function getCompletedNotificationBody(Import $import): string
    {
        $body = 'Your driver import has completed and ' . number_format($import->successful_rows) . ' ' . str('row')->plural($import->successful_rows) . ' imported.';

        if ($failedRowsCount = $import->getFailedRowsCount()) {
            $body .= ' ' . number_format($failedRowsCount) . ' ' . str('row')->plural($failedRowsCount) . ' failed to import.';
        }

        return $body;
    }