code: def dec_tree() -> (DecisionTreeClassifier, DecisionTreeRegressor):
      return joblib.load("fixtures/sk_decision_tree_classifier.joblib")
  
imports: import joblib
  import numpy
  import pytest
  from sklearn.tree import DecisionTreeRegressor, DecisionTreeClassifier
  from dtreeviz.models.sklearn_decision_trees import ShadowSKDTree
label_desc: Use image node_id 1 for calling a global function with example usage: dec_tree() and returns: joblib