code: def test_jax_duck_typing_get_item(self):
      v = objax.TrainVar(
          jn.array(
              [[1.0, 2.0, 3.0], [4.0, 5.0, 6.0], [7.0, 8.0, 9.0]],
              dtype=jn.float32,
          )
      )
      np.testing.assert_allclose(v.value[0, 1], v[0, 1])
      np.testing.assert_allclose(v.value[1, :], v[1, :])
  
imports: import unittest
  import numpy
  import jax.numpy
  import objax
label_desc: Use image node_id 16 for calling the TestVariable obj's underlying member method code with example usage: obj.test_jax_duck_typing_get_item() without return types