function EpisodeIterator(episode) {
  PhotoIterator.call(this);
  this.episode_ = episode;
  this.photoIndex_ = 0;
}
/**
 * Iteration class which covers every photo in an episode.
 *
 * @param {object} episode.
 */
Iteration class which covers every photo in an episode.
@param {object} episode.
Iteration class which covers every photo in an episode . @param { object } episode .
function EpisodeIterator(episode) {
  PhotoIterator.call(this);
  this.episode_ = episode;
  this.photoIndex_ = 0;
}
function EpisodeIterator ( episode ) { PhotoIterator . call ( this ) ; this . episode_ = episode ; this . photoIndex_ = 0 ; }
Iteration class which covers every photo in an episode.
Iteration class which covers every photo in an episode .