code: def test_lambda_callback(env_3, opt_dtc_0):
      ...
  
imports: from hyperparameter_hunter import Environment, CVExperiment, Real, Integer, Categorical
  from hyperparameter_hunter import BayesianOptPro, ExtraTreesOptPro, lambda_callback
  from hyperparameter_hunter.callbacks.recipes import confusion_matrix_oof, confusion_matrix_holdout
  from hyperparameter_hunter.i_o.recorders import YAMLDescriptionRecorder, UnsortedIDLeaderboardRecorder
  from hyperparameter_hunter.i_o.result_reader import has_experiment_result_file
  from hyperparameter_hunter.utils.learning_utils import get_toy_classification_data, get_breast_cancer_data
  import pytest
  from sklearn.ensemble import GradientBoostingClassifier
  from sklearn.metrics import f1_score
  from sklearn.model_selection import RepeatedStratifiedKFold, StratifiedKFold
  from sklearn.neighbors import KNeighborsClassifier
  from sklearn.svm import SVC
  from sklearn.tree import DecisionTreeClassifier
label_desc: Use image node_id 16 for calling a global function with example usage: test_lambda_callback(env_3, opt_dtc_0) without return types