code: def input_spec(self):
      ret = self.base.input_spec()
      token_keys = utils.find_spec_keys(ret, lit_types.Tokens)
      for k in token_keys:
          ret.pop(k, None)
      return ret
  
imports: from typing import Optional
  from absl.testing import absltest
  from absl.testing import parameterized
  from lit_nlp.api import dataset
  from lit_nlp.api import model
  from lit_nlp.api import types
  from lit_nlp.components import hotflip
  from lit_nlp.lib import utils
  import numpy
label_desc: Use image node_id 2 for calling the ModelWithoutTokens obj's underlying member method code with example usage: obj.input_spec() and returns: ret