class_docstr: Unit test invers transform class
  TODO: Docstring
  Parameters
  ----------
  unittest : [type]
      [description]
docstr: Setup
  Parameters
  ----------
  unittest : [type]
      [description]
code: def setUp(self):
      """
      Setup
      Parameters
      ----------
      unittest : [type]
          [description]
      """
      data_path = dirname(dirname(abspath(__file__)))
      self.ds_titanic_clean = pd.read_pickle(
          join(data_path, "data", "clean_titanic.pkl")
      )
  
file_path: shapash/tests/integration_tests/test_integration_inverse_tranform.py
imports: import unittest
  from os.path import dirname, abspath, join
  import pandas
  import category_encoders
  from shapash.utils.transform import inverse_transform
label_desc: Use image node_id 1 for calling the TestInverseTranform obj's underlying member method code with example usage: obj.setUp() without return types