class_docstr: Dummy object which exists to be unique from any possible user value.
class_docstr_tok: ["Dummy","object","which","exists","to","be","unique","from","any","possible","user","value","."]
code: def __repr__(self):
      return "unset"
  
imports: import tensorflow.compat.v2
  from tensorflow_probability.python.distributions import distribution
  from tensorflow_probability.python.util.deferred_tensor import DeferredTensor
label_desc: Use image node_id 1 for calling the _Unset obj's underlying member method code with example usage: obj.__repr__() and returns: str