code: def test_signed_log_exp_transform_scalar(self):
      signed_logp1 = self.variant(transforms.signed_logp1)
      signed_expm1 = self.variant(transforms.signed_expm1)
      x = jnp.array(self.x)
      # Test inverse.
      np.testing.assert_allclose(
          signed_expm1(signed_logp1(x)), self.x, atol=1e-3
      )
  
imports: import functools
  from absl.testing import absltest
  from absl.testing import parameterized
  import chex
  import jax
  import jax.numpy
  import numpy
  from rlax._src import transforms
label_desc: Use image node_id 6 for calling the TransformsTest obj's underlying member method code with example usage: obj.test_signed_log_exp_transform_scalar() without return types