code: def test_signature_support(self):
      def f(a, b, c):
          return a + b + c
  
      jitted_f = jax.jit(f)
      self.assertEqual(
          inspect.signature(f), inspect.signature(jitted_f)
      )
  
imports: import inspect
  from absl.testing import absltest
  from absl.testing import parameterized
  import jax
  from jax import dtypes
  from jax import numpy
  from jax._src import api_util
  from jax._src import config
  from jax._src import core
  from jax._src import lib
  from jax._src import test_util
  from jax._src.interpreters import pxla
  import numpy
label_desc: Use image node_id 9 for calling the JaxJitTest obj's underlying member method code with example usage: obj.test_signature_support() and returns: unknown