code: def _get_tree_dataframe(self):
      return self.booster.trees_to_dataframe().query(
          f"Tree == {self.tree_index}"
      )
  
imports: import json
  import math
  from collections import defaultdict
  from typing import List, Mapping
  import numpy
  from dtreeviz.models.shadow_decision_tree import VisualisationNotYetSupportedError
  from dtreeviz.models.shadow_decision_tree import ShadowDecTree
  from dtreeviz import utils
  import xgboost
  from xgboost.core import Booster
label_desc: Use image node_id 16 for calling the ShadowXGBDTree obj's underlying member method code with example usage: obj._get_tree_dataframe() and returns: self