public function setUpdatedAtValue(\DateTime $updatedAt = null)
    {
        if($updatedAt==null && $this->updatedAt == null){
            $this->updatedAt = new \DateTime();
        }else if($updatedAt instanceof \DateTime){
            $this->updatedAt = $updatedAt;
        }else{
            $this->updatedAt = new \DateTime();
        }
    }