code: def create(self, *args, **kwargs):
      self.optimizer = self.optimizer_impl(*args, **kwargs)
      self.optimizer.setup(self.target)
  
imports: import pickle
  import unittest
  import numpy
  import six
  import chainer
  from chainer import functions
  from chainer import optimizers
  from chainer import testing
label_desc: Use image node_id 2 for calling the TestOptimizerHyperparameter obj's underlying member method code with example usage: obj.create() without return types