/**
  * @param ImportSource     $source
  * @param CachedThreadData $threadData
  * @param string           $pageName
  */
 public function __construct(ImportSource $source, CachedThreadData $threadData, $pageName)
 {
     $this->importSource = $source;
     $this->threadData = $threadData;
     $this->pageName = $pageName;
     $this->topicIdIterator = new ArrayIterator($threadData->getTopics());
     $this->rewind();
 }