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