special_tokens_map.json

{
  "image_prefix": "<fim_prefix>",
  "image_suffix": "<fim_suffix>",
  "image_token": "<|img|>",
  "pad_token": "<pad>",
  "unk_token": {
    "content": "<unk>",
    "lstrip": false,
    "normalized": false,
    "rstrip": false,
    "single_word": false
  }
}