docs: public static Pair<Integer,byte[]> toCSV(
              VoltTable vt,
              ArrayList<VoltType> columns,
              char delimiter,
              char fullDelimiters[],
              int lastNumCharacters) throws IOException {
          StringWriter sw = new StringWriter((int)(lastNumCharacters * 1.2));
          CSVWriter writer;
          if (fullDelimiters != null) {
              writer = new CSVWriter(sw,
                      fullDelimiters[0], fullDelimiters[1], fullDelimiters[2], String.valueOf(fullDelimiters[3]));
          }
          else if (delimiter == ',') {
              // CSV
              writer = new CSVWriter(sw, delimiter);
          } else {
              // TSV
              writer = CSVWriter.getStrictTSVWriter(sw);
          }
          toCSVWriter(writer, vt, columns);
          String csvString = sw.toString();
          return Pair.of(csvString.length(), csvString.getBytes(com.google_voltpatches.common.base.Charsets.UTF_8));
      }