code: public HistogramDataPointCodec getCodec(final int id) {
      final HistogramDataPointCodec codec = codecs.get(id);
      if (codec == null) {
        throw new IllegalArgumentException("No codec found mapped to ID " + id);
      }
      return codec;
    }
docs: Return the instance of the given codec.
  @param id The numeric ID of the codec (the first byte in storage).
  @return The instance of the given codec
  @throws IllegalArgumentException if no codec was found for the given ID.