/**
* @param int $offset
* @return void
*/
public function offsetUnset($offset)
{
$result = $this->object->offsetUnset($offset);
return $result === $this->object ? $this : $result;
}
/**
* @param int $offset
* @return void
*/
public function offsetUnset($offset)
{
$result = $this->object->offsetUnset($offset);
return $result === $this->object ? $this : $result;
}