同一对象，但缺少一个属性值

Question

我最近遇到一个奇怪的问题，同一对象但缺少一个属性值，在此属性的settter方法上被调用。有什么原因会发生这种情况？

OrganizationAwareTrait.php:20:string 'get--->' (length=7)
OrganizationAwareTrait.php:20:string 'userId:6' (length=8)
OrganizationAwareTrait.php:20:string '0000000058b398cc0000000054844e07' (length=32)
OrganizationAwareTrait.php:20:int 2
OrganizationAwareTrait.php:20:string '<----get' (length=8)
vendor/symfony/security/Core/Authentication/Token/Storage/TokenStorage.php:42:int 2
OrganizationAwareTrait.php:20:string 'get--->' (length=7)
OrganizationAwareTrait.php:20:string 'userId:6' (length=8)
OrganizationAwareTrait.php:20:string '0000000058b398cc0000000054844e07' (length=32)
OrganizationAwareTrait.php:20:int 2
OrganizationAwareTrait.php:20:string '<----get' (length=8)
OrganizationAwareTrait.php:20:string 'get--->' (length=7)
OrganizationAwareTrait.php:20:string 'userId:6' (length=8)
OrganizationAwareTrait.php:20:string '0000000058b398cc0000000054844e07' (length=32)
OrganizationAwareTrait.php:20:int 2
OrganizationAwareTrait.php:20:string '<----get' (length=8)
OrganizationAwareTrait.php:20:string 'get--->' (length=7)
OrganizationAwareTrait.php:20:string 'userId:6' (length=8)
OrganizationAwareTrait.php:20:string '0000000058b398cc0000000054844e07' (length=32)
OrganizationAwareTrait.php:20:int 2
OrganizationAwareTrait.php:20:string '<----get' (length=8)
OrganizationAwareTrait.php:20:string 'get--->' (length=7)
OrganizationAwareTrait.php:20:string 'userId:6' (length=8)
OrganizationAwareTrait.php:20:string '0000000058b398cc0000000054844e07' (length=32)
OrganizationAwareTrait.php:20:null
OrganizationAwareTrait.php:20:string '<----get' (length=8)

组织特质

trait OrganizationAwareTrait
{
    /**
     * @var OrganizationInterface
     *
     */
    private $organization;

    /**
     * @return OrganizationInterface|null
     */
    public function getOrganization()
    {
            var_dump('get--->','userId:'.$this->getId(), spl_object_hash($this), $this->organization? $this->organization->getId(): null, '<----get');

        return $this->organization;
    }

    /**
     * @param OrganizationInterface|null $organization
     * @return $this
     */
    public function setOrganization(?OrganizationInterface $organization)
    {
         var_dump('set--->', $this->getId(), spl_object_hash($this), $organization? $organization->getId(): null, '<----get');

        $this->organization = $organization;
        return $this;
    }
}

User.php，也不会调用用户类的序列化和反序列化。

class User {
use OrganizationTrait;

protected $otherPropertiesAreFine;

}