code: def base_extractor():
      return evaluator_extractor(
          evaluator_name="roc_auc_evaluator__target"
      )
  
file_path: fklearn/tests/tuning/test_stoppers.py
imports: import pytest
  from fklearn.metrics.pd_extractors import evaluator_extractor
  from fklearn.tuning.stoppers import stop_by_iter_num, stop_by_no_improvement, stop_by_num_features, stop_by_no_improvement_parallel, stop_by_num_features_parallel
  from tests import LOGS, PARALLEL_LOGS
label_desc: Use image node_id 3 for calling a global function with example usage: base_extractor() and returns: evaluator_extractor