/**
* How to position the tooltip - top | bottom | left | right | auto.
* When "auto" is specified, it will dynamically reorient the tooltip.
* For example, if placement is "auto left", the tooltip will display to the left when possible, otherwise it will display right.
* When a function is used to determine the placement,
* it is called with the tooltip DOM node as its first argument and the triggering element DOM node as its second.
* The this context is set to the tooltip instance.
* @param string $value
* @return $this default : top
*/
public function setPlacement($value)
{
return $this->setParamCtrl("placement", $value, CssRef::position());
}
