public function setDeletedAt($deleted_at) {
        
        $this -> deleted_at = $deleted_at !== null ? new \DateTime($deleted_at) : null;
        return $this;
    }
public function setDeletedAt($deleted_at) {
        
        $this -> deleted_at = $deleted_at !== null ? new \DateTime($deleted_at) : null;
        return $this;
    }
public function setDeletedAt ( $ deleted_at ) { $ this -> deleted_at = $ deleted_at !== null ? new \ DateTime ( $ deleted_at ) : null ; return $ this ; }
Sets the deleted at
@param string $deleted_at
@return TimestampAwareTrait
Sets the deleted at