code: def setUp(self):
      self.x_shape = (4, 3, 2)
      self.dtype = numpy.float32
  
      self.link = links.Swish(None)
      self.link.cleargrads()
  
      self.x = numpy.random.uniform(-1, 1, self.x_shape).astype(
          self.dtype
      )
      self.gy = numpy.random.uniform(-1, 1, self.x_shape).astype(
          self.dtype
      )
  
imports: import unittest
  import numpy
  import chainer
  from chainer import backend
  from chainer.backends import cuda
  from chainer import gradient_check
  from chainer import links
  from chainer import testing
  from chainer.testing import attr
  from chainer.testing import condition
label_desc: Use image node_id 1 for calling the TestSwishFull obj's underlying member method code with example usage: obj.setUp() without return types