code: @Nonnull
    public BloodhoundOptions setDatumTokenizerPreTokenized ()
    {
      final JSVar aVarDatum = new JSVar ("d");
      return setDatumTokenizer (new JSAnonymousFunction (aVarDatum,
                                                         new JSReturn (aVarDatum.ref (BloodhoundDatum.JSON_TOKENS))));
    }
docs: Set a datum tokenizer that uses pre-tokenized tokens (e.g. from remote) as
  contained in the datum. It therefore uses the field
  {@link BloodhoundDatum#JSON_TOKENS} of each datum.
  
  @return this