code: def most_specific_common_supertype(self, others):
      if not all(isinstance(other, Mock2AsTopType) for other in others):
          return None
      return (
          self
          if all(self._object == other._object for other in others)
          else Mock2AsTopType(2)
      )
  
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 2 for calling the Mock2AsTopType obj's underlying member method code with example usage: obj.most_specific_common_supertype(others) and returns: unknown, None