class_docstr: Tracks the tree structure of a collection of ConjectureData
  objects, for use in ConjectureRunner.
code: def __init__(self):
      self.root = TreeNode()
  
imports: from __future__ import absolute_import, division, print_function
  import attr
  from hypothesis.errors import Flaky, HypothesisException
  from hypothesis.internal.compat import hbytes, int_to_bytes
  from hypothesis.internal.conjecture.data import ConjectureData, DataObserver, Status, StopTest, bits_to_bytes
  from hypothesis.internal.conjecture.junkdrawer import IntList
label_desc: Use image node_id 1 to create a new DataTree object from inherited base classes: object with example: obj = DataTree()