class_docstr: A test result class that can print formatted text results to a stream.
  
  Used by TextTestRunner.
code: def printErrors(self):
      if self.dots or self.showAll:
          self.stream.writeln()
      self.printErrorList("ERROR", self.errors)
      self.printErrorList("FAIL", self.failures)
  
imports: import unittest
  import doctest
  import sys
  import time
  import timeside.core
label_desc: Use image node_id 8 for calling the _TextTestResult obj's underlying member method code with example usage: obj.printErrors() without return types