code: def test_works_correctly(self):
      init = initializers.BlockwiseInitializer(
          ["glorot_uniform", "zeros"], [3, 4]
      )
      x = init([2, 1, 7])
      self.assertEqual((2, 1, 7), x.shape)
      x_ = self.evaluate(x)
      self.assertAllEqual(np.zeros([2, 1, 4]), x_[..., 3:])
  
imports: import numpy
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.internal import tf_keras
  from tensorflow_probability.python.layers import initializers
label_desc: Use image node_id 1 for calling the BlockwiseInitializerTest obj's underlying member method code with example usage: obj.test_works_correctly() without return types