code: def setUp(self):
      self.trigger = chainer.training.triggers.TimeTrigger(1)
      self.trainer = DummyTrainer()
  
file_path: chainer/tests/chainer_tests/training_tests/triggers_tests/test_time_trigger.py
imports: import io
  import unittest
  import chainer
  from chainer import testing
label_desc: Use image node_id 1 for calling the TestTimeTrigger obj's underlying member method code with example usage: obj.setUp() without return types