code: def __hash__(self) -> int:
      return self._object_hash
  
imports: import dataclasses
  from typing import Any
  from tensorflow.core.function.trace_type import custom_nest_trace_type
  from tensorflow.core.function.trace_type import default_types
  from tensorflow.python.platform import test
  from tensorflow.python.types import trace
label_desc: Use image node_id 6 for calling the MockSupertypes2With3 obj's underlying member method code with example usage: obj.__hash__() and returns: self