Laravel Repository Pattern

interface ModuleRepositoryInterface {
    public function paginate(int $perPage): LengthAwarePaginator;
    public function findBySlug(string $slug): ?Module;
}

class EloquentModuleRepository implements ModuleRepositoryInterface {
    public function paginate(int $perPage): LengthAwarePaginator {
        return Module::where('is_published', true)->latest('published_at')->paginate($perPage);
    }
    public function findBySlug(string $slug): ?Module {
        return Module::where('slug', $slug)->firstOrFail();
    }
}