code: function StoryCollection (client, params) {
    var self = this
    if (!(self instanceof StoryCollection)) return new StoryCollection(client, params)
    if (!(client instanceof Snapchat)) throw new Error('invalid client')
  
    self.client = client
  
    var thumbs = params['thumbnails']
  
    // The username of the user associated with this story collection.
    self.username = params['username']
    // Whether this story contains explicit content.
    self.matureContent = !!params['mature_content']
  
    // shared stories only
  
    // Only applies to shared stories.
    self.adPlacementData = params['ad_placement_metadata']
    // The display name of the shared story.
    self.displayName = params['display_name']
    // The identifier of the shared story.
    self.sharedIdentifier = params['shared_id']
    // Whether the shared story is local or not.
    self.isLocal = !!params['is_local']
  
    // Only applies to shared stories.
    if (thumbs) {
      // The thumbnail for the viewed state of the story.
      self.viewedThumbnail = thumbs['viewed']['url']
      // The thumbnail for the unviewed state of the story.
      self.unviewedThumbnail = thumbs['unviewed']['url']
  
      self.viewedThumbnailNeedsAuth = !!thumbs['viewed']['needs_auth']
      self.unviewedThumbnailNeedsAuth = !!thumbs['unviewed']['needs_auth']
    }
  
    // An array of Story objects.
    self.stories = (params['stories'] || []).map(function (story) {
      xtend(story.story, {
        'viewed': story.viewed
      })
      return new Story(self.client, story.story)
    })
  }
docs: Snapchat StoryCollection
  
  @class
  @param {Snapchat} client
  @param {Object} params