InvoiceShelf/app/Domains/Metadata/MetadataServiceProvider.php

<?php

namespace App\Domains\Metadata;

use App\Domains\Metadata\Application\EloquentCustomFieldValueWriter;
use App\Domains\Metadata\Contracts\CustomFieldValueWriter;
use App\Domains\Metadata\Models\CustomField;
use App\Domains\Metadata\Models\Note;
use App\Domains\Metadata\Policies\CustomFieldPolicy;
use App\Domains\Metadata\Policies\NotePolicy;
use Illuminate\Support\Facades\Gate;
use Illuminate\Support\ServiceProvider;

class MetadataServiceProvider extends ServiceProvider
{
    public function register(): void
    {
        $this->app->bind(CustomFieldValueWriter::class, EloquentCustomFieldValueWriter::class);
    }

    public function boot(): void
    {
        Gate::policy(CustomField::class, CustomFieldPolicy::class);
        Gate::policy(Note::class, NotePolicy::class);
        Gate::define('manage notes', [NotePolicy::class, 'manageNotes']);
        Gate::define('view notes', [NotePolicy::class, 'viewNotes']);
    }
}