code: def get_node_split(self, id) -> (int, float):
      return self.tree_model.tree_.threshold[id]
  
imports: from collections import defaultdict
  from typing import List, Mapping
  import numpy
  from sklearn.utils import compute_class_weight
  from dtreeviz.models.shadow_decision_tree import ShadowDecTree
  from dtreeviz.utils import criterion_remapping
label_desc: Use image node_id 17 for calling the ShadowSKDTree obj's underlying member method code with example usage: obj.get_node_split(id) and returns: self