code: def testBatchJacobian(self):
      with tf.GradientTape() as g:
          x = np.asarray([[1.0, 2.0], [3.0, 4.0]])
          y = np.asarray([[3.0, 4.0], [5.0, 6.0]])
          g.watch(x)
          g.watch(y)
          z = x * x * y
  
      batch_jacobian = g.batch_jacobian(z, x)
      answer = tf.stack(
          [
              tf.linalg.diag(2 * x[0] * y[0]),
              tf.linalg.diag(2 * x[1] * y[1]),
          ]
      )
  
      self.assertIsInstance(batch_jacobian, np.ndarray)
      self.assertAllClose(batch_jacobian, answer)
  
imports: import numpy
  import tensorflow.compat.v2
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops.numpy_ops import np_math_ops
label_desc: Use image node_id 18 for calling the InteropTest obj's underlying member method code with example usage: obj.testBatchJacobian() without return types