private static Tensor createTokenTypeIds(Tensor d)  {
        return d.map((x) -> 0);  // Assume only one token type
    }
A BERT Base compatible embedder. This embedder uses a WordPiece embedder to
produce a token sequence that is then input to a transformer model. A BERT base
compatible transformer model must have three inputs:

 - A token sequence (input_ids)
 - An attention mask (attention_mask)
 - Token types for cross encoding (token_type_ids)

See bert-base-embedder.def for configurable parameters.

@author lesters
model-integration/src/main/java/ai/vespa/embedding/BertBaseEmbedder.java