/**
* Construct a new call data instance.
*
* @param int $index The index of this call.
* @param CalledEvent $calledEvent The 'called' event.
*
* @throws InvalidArgumentException If the supplied calls respresent an invalid call state.
*/
public function __construct($index, CalledEvent $calledEvent)
{
$this->index = $index;
$calledEvent->setCall($this);
$this->calledEvent = $calledEvent;
$this->iterableEvents = array();
}
