code: def test_repeat():
      with pytest.raises(ValueError):
          Docstring(repeat)
  
file_path: statsmodels/statsmodels/tools/tests/test_docstring.py
imports: import pytest
  from statsmodels.tools.docstring import Docstring, remove_parameters, Parameter
label_desc: Use image node_id 5 for calling a global function with example usage: test_repeat() without return types