private static void iterateGroup(final FileGroup group, final Consumer<? super Couple<String>> callback) {
    for (FileGroup.UpdatedFile updatedFile : group.getUpdatedFiles()) {
      callback.consume(Couple.of(updatedFile.getPath(), updatedFile.getVcsName()));
    }
  }
private static void iterateGroup(final FileGroup group, final Consumer<? super Couple<String>> callback)