code: def test_that_explanation_throws_exceptions_for_incomplete():
      class IncompleteExplanation(ExplanationMixin):
          pass
  
      with pytest.raises(Exception):
          _ = IncompleteExplanation()
  
imports: import pytest
  from interpret.api.base import ExplainerMixin, ExplanationMixin
label_desc: Use image node_id 3 for calling a global function with example usage: test_that_explanation_throws_exceptions_for_incomplete() without return types