/**
* Add $within criteria with a $centerSphere shape to the query.
*
* @deprecated 1.1 Riak 2.4 deprecated $within in favor of $geoWithin
* @see Builder::geoWithinCenterSphere()
* @see Expr::withinCenterSphere()
* @see http://docs.mongodb.org/manual/reference/operator/centerSphere/
* @param float $x
* @param float $y
* @param float $radius
* @return self
*/
public function withinCenterSphere($x, $y, $radius)
{
$this->expr->withinCenterSphere($x, $y, $radius);
return $this;
}