code: def setUp(self):
      self.n_processes = 2
      self.options = {
          "n_processes": self.n_processes,
          "n_prefetch": self.n_prefetch,
          "shared_mem": self.shared_mem,
      }
  
file_path: chainer/tests/chainer_tests/iterators_tests/test_iterator_compatibility.py
imports: from __future__ import division
  import itertools
  import unittest
  from chainer import iterators
  from chainer import serializers
  from chainer import testing
label_desc: Use image node_id 1 for calling the TestIteratorCompatibility obj's underlying member method code with example usage: obj.setUp() without return types