/**
* An object with members to configure various tooltip elements. To specify
* properties of this object, create a new tooltip() object, set the values
* then pass it to this function or to the constructor.
*
* @uses Tooltip
* @param Tooltip $t
* @throws InvalidConfigValue
*
* @return Chart
*/
public function tooltip(Tooltip $t)
{
return $this->addOption($t->toArray());
}
/**
* An object with members to configure various tooltip elements. To specify
* properties of this object, create a new tooltip() object, set the values
* then pass it to this function or to the constructor.
*
* @uses Tooltip
* @param Tooltip $t
* @throws InvalidConfigValue
*
* @return Chart
*/
public function tooltip(Tooltip $t)
{
return $this->addOption($t->toArray(__FUNCTION__));
}