librilladora/app/Models/Librilladora.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Librilladora extends Model {
    use HasFactory;

    public function prueba(string $nombre) {
        $mpdf = new \Mpdf\Mpdf();

        // Write some HTML code:
        $mpdf->WriteHTML($nombre);

        // Output a PDF file directly to the browser
        $mpdf->Output();

    }
}