有没有办法在Symfony中拥有实体属性，它持有相同实体的属性组合？

// 主实体类
namespace App\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 */
class MainEntity
{
    // ...

    /**
     * @ORM\ManyToOne(targetEntity="App\Entity\RelatedEntity")
     * @ORM\JoinColumn(nullable=false)
     */
    private $relatedEntity;

    // ...

    public function getRelatedEntity(): ?RelatedEntity
    {
        return $this->relatedEntity;
    }

    public function setRelatedEntity(?RelatedEntity $relatedEntity): self
    {
        $this->relatedEntity = $relatedEntity;

        return $this;
    }

    // ...
}

// 被关联的实体类
namespace App\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 */
class RelatedEntity
{
    // ...

    /**
     * @ORM\Column(type="string", length=255)
     */
    private $name;

    // ...

    public function getName(): ?string
    {
        return $this->name;
    }

    public function setName(string $name): self
    {
        $this->name = $name;

        return $this;
    }

    // ...
}