Embedded relation object without extra query

[JuanLuisGarciaBorrego]

Hello
How can I tell Hateoas\Relation that using embedded does not create an extra query?

From my controller to retrieve the data I create a query with join, and then Hateas creates another when I use embedded

Entity:

/**
 * Local
 *
 * @ORM\Table(name="local")
 * @ORM\Entity(repositoryClass="AppBundle\Repository\LocalRepository")
 *
 * @Serializer\ExclusionPolicy("all")
 *
 * @Hateoas\Relation(
 *     "self",
 *     href = @Hateoas\Route(
 *         "api_local_show",
 *         parameters={ "code" = "expr(object.getId())" }
 *     ),
 *     embedded="expr(object.getExtra())"
 * )
 */
class Local
{
    ....
    /**
     * @var Extra
     *
     * @ORM\OneToOne(targetEntity="Extra")
     * @ORM\JoinColumn(name="extra_id", referencedColumnName="id")
     *
     * @Serializer\Exclude()
     */
    private $extra;
}

I do not know if I explained correctly, thank you very much