clone() {
    const clone = new shaka.media.MetaSegmentIndex();
    // Be careful to clone the Array.  We don't want to share the reference with
    // our clone and affect each other accidentally.
    clone.indexes_ = this.indexes_.slice();
    clone.numEvicted_ = this.numEvicted_;
    return clone;
  }
Create a clone of this MetaSegmentIndex containing all the same indexes.

@return {!shaka.media.MetaSegmentIndex}