code: def __init__(
      self, arg=None, *, value_type=None, overwrite=None, **kwargs
  ):
      self._maybe_initialize_trackable()
      super().__init__(
          arg=arg,
          value_type=value_type,
          overwrite=overwrite,
          singleton=None,
          **kwargs,
      )
  
imports: from collections import OrderedDict
  import numpy
  import tensorflow
  from tensorflow.python.training.tracking.tracking import AutoTrackable
  from tensorflow.python.training.tracking.data_structures import sticky_attribute_assignment
  from tensorforce.core.utils import NestedDict
label_desc: Use image node_id 1 to create a new TrackableNestedDict object from inherited base classes: NestedDict, AutoTrackable with example: obj = TrackableNestedDict(arg)