class_docstr: A dict with a mutation flag.
code: def __init__(self, *args, **kwargs):
      super().__init__(*args, **kwargs)
      self._mutated = True
  
imports: import collections
  import functools
  from typing import Any, Callable, Hashable, Mapping, Optional
  from tensorflow.core.function import trace_type
  from tensorflow.python import pywrap_tfe
  from tensorflow.python.framework import dtypes
  from tensorflow.python.types import core
  from tensorflow.python.util import object_identity
label_desc: Use image node_id 1 to create a new MutationAwareDict object from inherited base classes: py_collections with example: obj = MutationAwareDict()