/**
* Add where $within $box query.
*
* @param string $x1
* @param string $y1
* @param string $x2
* @param string $y2
* @return QueryProxy this instance
*/
public function withinBox($x1, $y1, $x2, $y2)
{
$this->queryChanged = true;
return parent::withinBox($x1, $y1, $x2, $y2);
}
