code: def __init__(self):
      self.added_args = []
      self.deleted_args = []
      self.forward_preprocess_args = []
      self.forward_postprocess_args = []
  
imports: import time
  import unittest
  import numpy
  import chainer
  from chainer import testing
label_desc: Use image node_id 1 to create a new MyLinkHook object from inherited base classes: chainer with example: obj = MyLinkHook()