code: public AppenderatorDriverAddResult add(
        InputRow row,
        String sequenceName
    ) throws IOException
    {
      return append(row, sequenceName, null, false, true);
    }
docs: Add a row. Must not be called concurrently from multiple threads.
  
  @param row          the row to add
  @param sequenceName sequenceName for this row's segment
  
  @return {@link AppenderatorDriverAddResult}
  
  @throws IOException if there is an I/O error while allocating or writing to a segment