code: def addUnexpectedSuccess(self, test):
      self._add_result(test, outcome="UNEXPECTED_SUCCESS")
      super().addUnexpectedSuccess(test)
  
imports: import functools
  import io
  import sys
  import time
  import traceback
  import unittest
  from test import support
label_desc: Use image node_id 11 for calling the RegressionTestResult obj's underlying member method code with example usage: obj.addUnexpectedSuccess(test) without return types