[Feature Request] How use with to bring union data for relations?

[NandoSantana]

I have this relations:

public function empresa(): belongsTo
    {
        return $this->belongsTo(App\Models\Empresa::class);
    }

    public function user(): belongsTo
    {
        return $this->belongsTo(App\Models\User::class);
    }

    public function originUser(): belongsTo
    {
        return $this->belongsTo(App\Models\User::class, 'origin_user');
    }