class_docstr: Tracks the tree structure of a collection of ConjectureData
  objects, for use in ConjectureRunner.
code: def new_observer(self):
      return TreeRecordingObserver(self)
  
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 6 for calling the DataTree obj's underlying member method code with example usage: obj.new_observer() and returns: TreeRecordingObserver