code: def multiindex_with_missing_dataframe():
      data = {
          ("a", ""): [1, 2, 3],
          ("", "Normal  Distribution"): [1, 2, 3],
          ("decorated-elephant", "r.i.p-rhino :'("): [1, 2, 3],
      }
      df = pd.DataFrame(data)
      return df
  
file_path: pyjanitor/tests/conftest.py
imports: import os
  import numpy
  import pandas
  import pytest
  from janitor.testing_utils import date_data
label_desc: Use image node_id 6 for calling a global function with example usage: multiindex_with_missing_dataframe() and returns: df