code: def get_expected_output_frame_case_insens():
      return get_expected_output_frame(
          [0, 1, 0, 2, 0, 2, 1],
          ["a", "a", "b", "b", "c", "c", "z"],
          [1, 3, 1, 1, 1, 3, 1],
          [
              0.28768,
              0.28768,
              0.28768,
              0.28768,
              0.28768,
              0.28768,
              0.69314,
          ],
          [
              0.28768,
              0.86304,
              0.28768,
              0.28768,
              0.28768,
              0.86304,
              0.69314,
          ],
      )
  
file_path: h2o-3/h2o-py/tests/testdir_algos/tf-idf/pyunit_PUBDEV-6938_tf-idf.py
imports: from collections import OrderedDict
  from h2o import H2OFrame
  from h2o.information_retrieval.tf_idf import tf_idf
  from tests import pyunit_utils
label_desc: Use image node_id 4 for calling a global function with example usage: get_expected_output_frame_case_insens() and returns: get_expected_output_frame