code: def test_abstract_methods(self):
      label_model = LabelModel(None)
      with pytest.raises(NotImplementedError):
          label_model.fit()
      with pytest.raises(NotImplementedError):
          label_model.score()
      with pytest.raises(NotImplementedError):
          label_model.predict()
  
imports: import sys
  import numpy
  import pytest
  from argilla.client.models import TextClassificationRecord
  from argilla.labeling.text_classification import FlyingSquid, Snorkel, WeakLabels, WeakMultiLabels
  from argilla.labeling.text_classification.label_models import LabelModel, MajorityVoter, MissingAnnotationError, NotFittedError, TieBreakPolicy, TooFewRulesError
label_desc: Use image node_id 2 for calling the TestLabelModel obj's underlying member method code with example usage: obj.test_abstract_methods() without return types