code: def test_grad_should_add_jvp_and_transpose_to_name_stack(self):
      @jax.value_and_grad
      def f(x):
          with jax.named_scope("foo"):
              return 2 * jnp.sin(x)
  
      jaxpr = jax.make_jaxpr(f)(1.0).jaxpr
      self.assertEqual(
          str(jaxpr.eqns[0].source_info.name_stack), "jvp(foo)"
      )
      self.assertEqual(
          str(jaxpr.eqns[1].source_info.name_stack), "jvp(foo)"
      )
      self.assertEqual(
          str(jaxpr.eqns[2].source_info.name_stack), "jvp(foo)"
      )
      self.assertEqual(
          str(jaxpr.eqns[4].source_info.name_stack),
          "transpose(jvp(foo))",
      )
  
      hlo_text = _get_hlo(f)(1.0)
      self.assertIn("jvp(foo)/sin", hlo_text)
      self.assertIn("jvp(foo)/cos", hlo_text)
      self.assertIn("transpose(jvp(foo))/mul", hlo_text)
  
imports: import functools
  from absl.testing import absltest
  import jax
  import jax.numpy
  from jax._src import core
  from jax import lax
  from jax._src.pjit import pjit
  from jax._src import linear_util
  from jax import config
  from jax._src import test_util
  from jax._src.lib import xla_client
label_desc: Use image node_id 6 for calling the NameStackTransformationTest obj's underlying member method code with example usage: obj.test_grad_should_add_jvp_and_transpose_to_name_stack() and returns: unknown