config.json

{
  "model_type": "bpe",
  "tokenizer_class": "BertWordPieceTokenizer",
  "do_lower_case": true,
  "pad_token_id": 3,
  "unk_token_id": 0,
  "sep_token_id": 2,
  "cls_token_id": 1,
  "mask_token_id": 4,
  "vocab_size": 1000
}