@Override
  default @Nullable ByteArraySequence serializeIndexedData(@NotNull InputData<Key, Value> data) throws IOException {
    return AbstractForwardIndexAccessor.serializeValueToByteSeq(serializeIndexedDataToInt(data), EnumeratorIntegerDescriptor.INSTANCE, 8);
  }
@Override
  default @Nullable ByteArraySequence serializeIndexedData(@NotNull InputData<Key, Value> data)