code: def __init__(self, vocab):
      self.vocab = vocab
      self.vocab_size = len(vocab)
  
imports: from typing import Dict, List, Union
  import numpy
  from nemo.collections.common.tokenizers.tokenizer_spec import TokenizerSpec
  from nemo.utils import logging
label_desc: Use image node_id 1 to create a new DummyTokenizer object  with example: obj = DummyTokenizer(vocab)