special_tokens_map.json

{
  "additional_special_tokens": [
    {
      "content": "[PET_BOUNDARY]",
      "lstrip": false,
      "normalized": false,
      "rstrip": false,
      "single_word": false
    }
  ],
  "cls_token": "[CLS]",
  "mask_token": "[MASK]",
  "pad_token": "[PAD]",
  "sep_token": "[SEP]",
  "unk_token": "[UNK]"
}