code: def __init__(self, name, parents):
      self.name = name
      self.parents = parents
      self.depth = -1
  
imports: import collections
  import functools
  import tensorflow.compat.v2
  from tensorflow_probability.python.distributions import joint_distribution_sequential
  from tensorflow_probability.python.internal import auto_composite_tensor
  from tensorflow_probability.python.internal import distribution_util
label_desc: Use image node_id 1 to create a new _Node object from inherited base classes: object with example: obj = _Node(name, parents)