Modifying exporter to get grouped exports

<?php

namespace App\Filament\Exports;

use App\Models\TimeEntry;
use Filament\Actions\Exports\ExportColumn;
use Filament\Actions\Exports\Exporter;
use Filament\Actions\Exports\Models\Export;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Support\Facades\DB;

class TimeEntryExporter extends Exporter
{
    protected static ?string $model = TimeEntry::class;

    public static function getColumns(): array
    {
        return [
            ExportColumn::make('task_name'),
            ExportColumn::make('total_duration_hours'),
        ];
    }

    public static function modifyQuery(Builder $query): Builder
    {
        return $query->select('task_name', DB::raw('SUM(duration_hours) as total_duration_hours'))
            ->groupBy('task_name');
    }

    public static function getCompletedNotificationBody(Export $export): string
    {
        $body = 'Your time entry export has completed and ' . number_format($export->successful_rows) . ' ' . str('row')->plural($export->successful_rows) . ' exported.';

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

        return $body;
    }
}