class_docstr: Wrapper of HuggingFace AutoTokenizer https://huggingface.co/transformers/model_doc/auto.html#autotokenizer.
class_docstr_tok: ["Wrapper","of","HuggingFace","AutoTokenizer","https",":","\/\/huggingface.co\/transformers\/model_doc\/auto.html","#","autotokenizer","."]
code: def unk_id(self):
      return self.tokens_to_ids([getattr(self, "unk_token")])[0]
  
imports: from typing import Optional
  from transformers import AutoTokenizer
  from nemo.collections.common.tokenizers.tokenizer_spec import TokenizerSpec
  from nemo.utils import logging
label_desc: Use image node_id 18 for calling the AutoTokenizer obj's underlying member method code with example usage: obj.unk_id() and returns: self