applyPlayRange(playRangeStart, playRangeEnd) {
    if (!this.manifest_.presentationTimeline.isLive()) {
      this.playRangeStart_ = playRangeStart;
      this.playRangeEnd_ = playRangeEnd;
    }
  }
Applies a playback range. This will only affect non-live content.

@param {number} playRangeStart
@param {number} playRangeEnd