class_docstr: Constructs an ESM tokenizer.
class_docstr_tok: ["Constructs","an","ESM","tokenizer","."]
code: def vocab_size(self) -> int:
      return self.get_vocab_size(with_added_tokens=False)
  
imports: import os
  from typing import List, Optional, Union
  from ...tokenization_utils import PreTrainedTokenizer
  from ...tokenization_utils_base import AddedToken
  from ...utils import logging
label_desc: Use image node_id 12 for calling the EsmTokenizer obj's underlying member method code with example usage: obj.vocab_size() and returns: self