code: def sample_features():
      return ["a", "b", "c", "d", "e"]
  
file_path: autogluon/core/tests/unittests/test_feature_selection.py
imports: import numpy
  import pandas
  import pytest
  from numpy.core.fromnumeric import sort
  from autogluon.core.utils.feature_selection import *
  from autogluon.core.utils.utils import unevaluated_fi_df_template
label_desc: Use image node_id 2 for calling a global function with example usage: sample_features() and returns: list