/**
* Updates the value of the field to a specified value if the specified value is greater than the current value of the field.
*
* @see Expr::max()
* @see http://docs.mongodb.org/manual/reference/operator/update/max/
* @param mixed $value
* @return self
*/
public function max($value)
{
$this->expr->max($value);
return $this;
}