/**
* Handles onStateWasSet event
* Returns true if there was state change
*
* @param StateInterface $state
* @param PayloadInterface $payload
*
* @return StateInterface|null
*/
private function handleOnStateWasSet(StateInterface $state, PayloadInterface $payload)
{
while ($state->hasEvent(self::ON_STATE_WAS_SET)) {
$newState = $state->triggerEvent(self::ON_STATE_WAS_SET, $payload);
if ($newState === null) {
break;
}
$state = $this->getState($newState);
$this->updatePayload($state, $payload);
}
}
