static computeIndexUris_(context) {
    const ManifestParserUtils = shaka.util.ManifestParserUtils;
    const MpdUtils = shaka.dash.MpdUtils;
    const SegmentBase = shaka.dash.SegmentBase;
    const StringUtils = shaka.util.StringUtils;

    const representationIndex = MpdUtils.inheritChild(
        context, SegmentBase.fromInheritance_, 'RepresentationIndex');

    let indexUris = context.representation.getBaseUris();
    if (representationIndex) {
      const representationUri =
        StringUtils.htmlUnescape(representationIndex.attributes['sourceURL']);
      if (representationUri) {
        indexUris = ManifestParserUtils.resolveUris(
            indexUris, [representationUri], context.urlParams());
      }
    }

    return indexUris;
  }
Compute the URIs of the segment index from the container.

@param {shaka.dash.DashParser.Context} context
@return {!Array<string>}
@private