oficial/app/src/Model/Inmobiliaria/Proveedor.php

<?php
namespace Incoviba\Model\Inmobiliaria;

use Incoviba\Common\Ideal;
use Incoviba\Model;

class Proveedor extends Ideal\Model
{
    public int $rut;
    public string $digito;
    public string $nombre;
    public ?string $razon;
    public ?DatosProveedor $datos;
    public ?Model\Persona $contacto;

    public function jsonSerialize(): mixed
    {
        return [
            'rut' => $this->rut,
            'digito' => $this->digito,
            'nombre' => $this->nombre,
            'razon' => $this->razon,
            'datos' => $this->datos,
            'contacto' => $this->contacto
        ];
    }
}