code: public static SequenceBatchCSVRecord fromWritables(List<List<List<Writable>>> input) {
          SequenceBatchCSVRecord ret = new SequenceBatchCSVRecord();
          for(int i = 0; i < input.size(); i++) {
              ret.add(Arrays.asList(BatchCSVRecord.fromWritables(input.get(i))));
          }
  
          return ret;
      }
docs: Convert a writables time series to a sequence batch
  @param input
  @return