public final function init($options, $stream, $feed)
 {
     $this->options = $options;
     $this->stream = $stream;
     $this->feed = $feed;
     $this->id = $feed->id;
     $this->errors = array();
     $this->count = $stream->getCountOfPosts();
     $this->imageWidth = $stream->getImageWidth();
     $this->cache = FFImageSizeCacheManager::get();
 }