code: function TrackPlayedSchema() {
      /**
       * The track of value
       * @member
       * @type { Track }
       */
      this.track = Object.create(Track.prototype);
      /**
       * The album of value
       * @member
       * @type { Album }
       */
      this.album = Object.create(Album.prototype);
  
  }
docs: The TrackPlayedSchema class
  @constructor
  @alias TrackPlayedSchema