server: '_stateChanged'
        },

        currentTime: {
          type: Number,
          notify: true,
          observer: '_currentTimeChanged'
        },

        startTime: {
          type: Number
        },

        __state: {
          type: String,
          observer: '__ytApiStateChange'
        },

        __currentTime: {
          type: String,
          observer: '_ytCurrentTimeChanged'
        },

        __pauseOnFirstSeek: {
          type: Boolean
        }
      },

      listeners: {
 