code: def startTest(self, test):
      super().startTest(test)
      if self.USE_XML:
          self.__e = e = self.__ET.SubElement(self.__suite, "testcase")
      self.__start_time = time.perf_counter()
  
imports: import functools
  import io
  import sys
  import time
  import traceback
  import unittest
  from test import support
label_desc: Use image node_id 3 for calling the RegressionTestResult obj's underlying member method code with example usage: obj.startTest(test) without return types