code: def addExpectedFailure(self, test, err):
      self._add_result(test, True, output=self.__makeErrorDict(*err))
      super().addExpectedFailure(test, err)
  
imports: import functools
  import io
  import sys
  import time
  import traceback
  import unittest
  from test import support
label_desc: Use image node_id 7 for calling the RegressionTestResult obj's underlying member method code with example usage: obj.addExpectedFailure(test, err) without return types