code: def test_get_node_feature(shadow_dec_tree):
      assert shadow_dec_tree.get_node_feature(0) == 3
      assert shadow_dec_tree.get_node_feature(2) == 1
      assert shadow_dec_tree.get_node_feature(4) == -2
      assert shadow_dec_tree.get_node_feature(8) == 4
      assert shadow_dec_tree.get_node_feature(12) == 1
  
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 17 for calling a global function with example usage: test_get_node_feature(shadow_dec_tree) without return types