code: def is_fit(self) -> bool:
      try:
          self.model.make_inspector()
          return True
      except Exception:
          return False
  
imports: from collections import defaultdict
  from typing import List, Mapping
  import numpy
  import tensorflow_decision_forests
  from tensorflow_decision_forests.component.py_tree.node import LeafNode
  from tensorflow_decision_forests.keras import RandomForestModel
  from tensorflow_decision_forests.tensorflow.core import Task
  from dtreeviz.models.shadow_decision_tree import ShadowDecTree, VisualisationNotYetSupportedError
label_desc: Use image node_id 3 for calling the ShadowTensorflowTree obj's underlying member method code with example usage: obj.is_fit() and returns: True, False