code: def setUp(self):
      self.link = links.EmbedID(3, 2, ignore_label=self.ignore_label)
      self.link.ignore_label
      self.link.cleargrads()
  
      self.W = self.link.W.data.copy()  # fixed on CPU
      self.x = numpy.array(self.x_data, dtype=numpy.int32)
      y_shape = self.x.shape + (2,)
      self.gy = numpy.random.uniform(-1, 1, y_shape).astype(
          numpy.float32
      )
  
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.testing import attr
  from chainer.testing import condition
label_desc: Use image node_id 1 for calling the TestEmbedID obj's underlying member method code with example usage: obj.setUp() without return types