code: public void batch(List<? extends Row> actions, @Nullable Object[] results)
        throws IOException, InterruptedException {
      if (results == null) {
        results = new Object[actions.size()];
      }
      batchCallback(actions, results, null);
    }
docs: <p>batch.</p>
  
  @param actions a {@link java.util.List} object.
  @param results an array of {@link java.lang.Object} objects.
  @throws java.io.IOException if any.
  @throws java.lang.InterruptedException if any.