OwnerVoter/Entity/Traits/OwnerTrait.php

<?php

namespace OwnerVoterBundle\Entity\Traits;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Security\Csrf\TokenStorage\TokenStorageInterface;
use Symfony\Component\Validator\Constraints as Assert;

trait OwnerTrait
{
    /**
     * @var string $owner Contiene el nombre del propietario.
     *
     * @ORM\Column(type="string", length=128, nullable=false)
     */
    private $owner;

    /**
     * @return string Retorna el nombre del propietario.
     */
    public function getOwner()
    {
        return $this->owner;
    }

    /**
     * @param string $owner Contiene el nombre del propietario.
     *
     * @return $this Retorna el objeto.
     */
    public function setOwner($owner = null)
    {
        $this->owner = $owner;
        return $this;
    }
}