code: def _create_model_and_data(self):
      x = numpy.array([[3, 1, 2]], numpy.float32)
      w = numpy.array([[1, 3, 2], [6, 4, 5]], numpy.float32)
      dot = numpy.dot(x, w.T)
  
      model = MyModel(w)
  
      return model, x, dot
  
imports: import time
  import unittest
  import numpy
  import chainer
  from chainer import testing
label_desc: Use image node_id 1 for calling the TestLinkHook obj's underlying member method code with example usage: obj._create_model_and_data() and returns: model,  x,  dot