code: public void add(String[] columns, Object[] values) {
          add(System.currentTimeMillis(), columns, values);
      }
docs: Add a data row to the batch with the current time.
  
  This method will throw a `MismatchedLengthException` if the length of `columns` and `values`
  are not the same.
  
  See {@link #add(long, Map)} for more information.
  
  @param columns The list of columns for a field to value mapping
  @param values  The list of values for a field to value mapping