code: def test_io_encoding(self):
      self.check_io_encoding("io")
  
imports: import locale
  import subprocess
  import sys
  import textwrap
  import unittest
  from test import support
  from test.support.script_helper import assert_python_ok, assert_python_failure
  from test.support import os_helper, MS_WINDOWS
label_desc: Use image node_id 11 for calling the UTF8ModeTests obj's underlying member method code with example usage: obj.test_io_encoding() without return types