code: def class_f2():
      return class2
  
imports: import time
  import pytest
  import numpy
  import pandas
  from hyperactive import Hyperactive
  from hyperactive.optimizers import BayesianOptimizer, TreeStructuredParzenEstimators, ForestOptimizer
label_desc: Use image node_id 4 for calling a global function with example usage: class_f2() and returns: class2