SovBundle/Doctrine/Extension/SluggableTrait.php

<?php

namespace Lc\SovBundle\Doctrine\Extension;

use Doctrine\ORM\Mapping as ORM;
use Gedmo\Mapping\Annotation as Gedmo;

trait SluggableTrait
{
    /**
     * @ORM\Column(type="string", length=255)
     * @Gedmo\Slug(fields={"title"})
     */
    protected $slug;

    public function getSlug(): ?string
    {
        return $this->slug;
    }

    public function setSlug(?string $slug): self
    {
        $this->slug = $slug;

        return $this;
    }
}