code: def test_init_segfault(self):
      # bug #3305: this used to segfault
      self.assertRaises(
          AttributeError, _multibytecodec.MultibyteStreamReader, None
      )
      self.assertRaises(
          AttributeError, _multibytecodec.MultibyteStreamWriter, None
      )
  
imports: import _multibytecodec
  import codecs
  import io
  import sys
  import textwrap
  import unittest
  from test import support
  from test.support import os_helper
  from test.support.os_helper import TESTFN
label_desc: Use image node_id 6 for calling the Test_MultibyteCodec obj's underlying member method code with example usage: obj.test_init_segfault() without return types