code: def setUp(self):
      self.global_config = configuration.GlobalConfig()
      self.config = configuration.LocalConfig(self.global_config)
  
      self.global_config.x = "global x"
      self.global_config.y = "global y"
      self.config.y = "local y"
      self.config.z = "local z"
  
file_path: chainer/tests/chainer_tests/test_configuration.py
imports: import io
  import threading
  import unittest
  import chainer
  from chainer import configuration
  from chainer import testing
label_desc: Use image node_id 1 for calling the TestLocalConfig obj's underlying member method code with example usage: obj.setUp() without return types