code: def setUp(self):
      weight_initializer, bias_initializer = self.get_initializers()
      with chainer.using_config("dtype", self.dtype):
          if self.activation_type == "tanh":
              if self.use_bi_direction:
                  link = links.NStepBiRNNTanh
              else:
                  link = links.NStepRNNTanh
  
          elif self.activation_type == "relu":
              if self.use_bi_direction:
                  link = links.NStepBiRNNReLU
              else:
                  link = links.NStepRNNReLU
  
          self.link = link(
              1,
              10,
              10,
              0.0,
              initialW=weight_initializer,
              initial_bias=bias_initializer,
          )
  
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import gradient_check
  from chainer import links
  from chainer import testing
  from chainer import initializers
  from chainer.testing import attr
  from chainer.testing import condition
label_desc: Use image node_id 2 for calling the TestInitialization obj's underlying member method code with example usage: obj.setUp() without return types