docs: public Iterator<String> listKernelBlackListApiPackages() {
          ProductPackages index = packageIndex;
          if (index != null) {
              return index.packageIterator(new Filter<PackageInfo>() {
                  @Override
                  public boolean includeValue(String packageName, PackageInfo value) {
                      return value.isApi() && value.isKernelExportBlacklistedPackage();
                  }
  
              });
          }
          return new EmptyIterator();
      }