code: public static PackageSummaryBuilder getInstance(Context context,
              PackageElement pkg, PackageSummaryWriter packageWriter) {
          return new PackageSummaryBuilder(context, pkg, packageWriter);
      }
docs: Construct a new PackageSummaryBuilder.
  
  @param context  the build context.
  @param pkg the package being documented.
  @param packageWriter the doclet specific writer that will output the
  result.
  
  @return an instance of a PackageSummaryBuilder.