code: def test_signed_power_transform_vector(self):
      square = self.variant(functools.partial(transforms.power, p=2.0))
      sqrt = self.variant(
          functools.partial(transforms.power, p=1 / 2.0)
      )
      # Test inverse.
      np.testing.assert_allclose(
          square(sqrt(self.xs)), self.xs, 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 11 for calling the TransformsTest obj's underlying member method code with example usage: obj.test_signed_power_transform_vector() without return types