code: def convert_tokens_to_ids(self, tokens):
      return [self.vocab.get(t, self.unk_id) for t in tokens]
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import logging
  import os
  import re
  import sys
  import tempfile
  from functools import partial
  from pathlib import Path
  import six
  from tqdm import tqdm
  import numpy
  from disco_diffusion_ernievil_base.vit_b_16x.ernievil2.transformers.file_utils import _fetch_from_remote
  import io
label_desc: Use image node_id 4 for calling the ErnieTokenizer obj's underlying member method code with example usage: obj.convert_tokens_to_ids(tokens) and returns: unknown