code: def test_for_loop_impl_trivial(self, for_impl):
      out = for_impl(5, lambda i, _: None, None)
      self.assertIsNone(out)
  
imports: from functools import partial
  from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  import jax
  from jax import random
  from jax._src import test_util
  from jax._src.lax.control_flow import for_loop
  import jax.numpy
  from jax import config
label_desc: Use image node_id 1 for calling the ForLoopTest obj's underlying member method code with example usage: obj.test_for_loop_impl_trivial(for_impl) without return types