code: def test_many_str(tmp_directory, nb_many_str):
      d = NotebookIntrospector("nb.ipynb")
      assert d["str"] == "a\nb\nc"
  
file_path: sklearn-evaluation/tests/nb/test_NotebookIntrospector.py
imports: from sklearn_evaluation import NotebookIntrospector
  from IPython.display import HTML, Image
label_desc: Use image node_id 11 for calling a global function with example usage: test_many_str(tmp_directory, nb_many_str) without return types