/**
* Selects option if it is not already selected.
*
* @param boolean $multiple Append this option to current selection.
*
* @return self
* @throws SelectException When no SELECT element association defined.
*/
public function select($multiple = false)
{
if (!$this->isSelected()) {
if ($this->select === null) {
throw new SelectException('No SELECT element association defined', SelectException::TYPE_UNBOUND_OPTION);
}
$this->select->getWrappedElement()->selectOption($this->getValue(), $multiple);
}
return $this;
}
