class_docstr: A placeholder that will ultimately be translated to a PTransform.
  
  Attributes:
    operation_def: An `OperationDef`.
    inputs: A tuple of `ValueNode`s.
docstr: A tuple of `ValueNode`s representing outputs of this operation.
docstr_tok: ["A","tuple","of","`","ValueNode","`","s","representing","outputs","of","this","operation","."]
code: def outputs(self):
      """A tuple of `ValueNode`s representing outputs of this operation."""
      return tuple(
          ValueNode(self, value_index)
          for value_index in range(self.operation_def.num_outputs)
      )
  
imports: import abc
  import collections
  import dataclasses
  from typing import Any, Collection, Dict, List, Optional, Tuple
  import pydot
label_desc: Use image node_id 5 for calling the OperationNode obj's underlying member method code with example usage: obj.outputs() and returns: tuple