code: def test_that_explainer_throws_exceptions_for_incomplete():
      class IncompleteExplainer(ExplainerMixin):
          pass
  
      with pytest.raises(Exception):
          _ = IncompleteExplainer()
  
imports: import pytest
  from interpret.api.base import ExplainerMixin, ExplanationMixin
label_desc: Use image node_id 1 for calling a global function with example usage: test_that_explainer_throws_exceptions_for_incomplete() without return types