notifyMaxSegmentDuration(maxSegmentDuration) {
    this.maxSegmentDuration_ = Math.max(
        this.maxSegmentDuration_, maxSegmentDuration);

    shaka.log.v1('notifyNewSegmentDuration:',
        'maxSegmentDuration=' + this.maxSegmentDuration_);
  }
Gives PresentationTimeline a Stream's maximum segment duration so it can
size and position the segment availability window.  This function should be
called once for each Stream (no more, no less), but does not have to be
called if notifySegments() is called instead for a particular stream.

@param {number} maxSegmentDuration The maximum segment duration for a
  particular stream.
@export