CaracoleBundle/Model/Setting/MerchantSettingModel.php

<?php

namespace Lc\CaracoleBundle\Model\Setting;

use Lc\CaracoleBundle\Model\Merchant\MerchantInterface;
use Doctrine\ORM\Mapping as ORM;
use Lc\SovBundle\Doctrine\EntityInterface;

class MerchantSettingModel implements SettingInterface, EntityInterface
{
    use SettingTrait;

    /**
     * @ORM\ManyToOne(targetEntity="Lc\CaracoleBundle\Model\Merchant\MerchantInterface", inversedBy="merchantSettings")
     * @ORM\JoinColumn(nullable=false)
     */
    protected $merchant;

    public function getMerchant(): ?MerchantInterface
    {
        return $this->merchant;
    }

    public function setMerchant(?MerchantInterface $merchant): self
    {
        $this->merchant = $merchant;

        return $this;
    }
}