/**
* Add $geoWithin criteria with a $centerSphere shape to the query.
*
* Note: the $centerSphere operator supports both 2d and 2dsphere indexes.
*
* @see Expr::geoWithinCenterSphere()
* @see http://docs.mongodb.org/manual/reference/operator/centerSphere/
* @param float $x
* @param float $y
* @param float $radius
* @return self
*/
public function geoWithinCenterSphere($x, $y, $radius)
{
$this->expr->geoWithinCenterSphere($x, $y, $radius);
return $this;
}
