/**
* Ask the test session to move to the previous RouteItem in the Route sequence.
*
* If $allowTimeout is set to true, the previous RouteItem in the Route sequence will bet set
* as the current RouteItem, whether or not it is timed out.
*
* On the other hand, if $allowTimeout is set to false, the previous RouteItem in the Route sequence
* which is not timed out will be set as the current RouteItem. If there is no more previous RouteItems
* that are not timed out in the Route sequence, the current RouteItem remains the same and an
* AssessmentTestSessionException with the appropriate timing error code is thrown.
*
* @param boolean $allowTimeout If set to true, the next RouteItem in the sequence does not have to respect timeLimits in force. Default value is false.
* @throws AssessmentTestSessionException If the test session is not running or an issue occurs during the transition (e.g. branching, preConditions, ...) or if $allowTimeout = false and there absolutely no possibility to move backward (even the first RouteItem is timed out).
* @qtism-test-interaction
* @qtism-test-duration-update
*/
public function moveBack($allowTimeout = false)
{
$sessionMemento = $this->getSessionMemento();
parent::moveBack($allowTimeout);
$this->triggerEventChange($sessionMemento);
}
