code: def test_column_duplicatable_naming():
      assert capper.__name__ == "capper"
      assert capper().__name__ == "capper"
  
imports: import pandas
  from fklearn.training.transformation import capper
  from fklearn.preprocessing.schema import feature_duplicator
label_desc: Use image node_id 2 for calling a global function with example usage: test_column_duplicatable_naming() without return types