code: def testBijectorForward(self):
      bijector = categorical_to_discrete.CategoricalToDiscrete(
          map_values=[0.1, 0.2, 0.3, 0.4], validate_args=True
      )
      self.assertAllClose(
          [[0.1, 0.2, 0.3, 0.4], [0.4, 0.3, 0.2, 0.1]],
          self.evaluate(bijector.forward([[0, 1, 2, 3], [3, 2, 1, 0]])),
      )
  
imports: import numpy
  import tensorflow.compat.v2
  from tensorflow_probability.python.bijectors import bijector_test_util
  from tensorflow_probability.python.bijectors import categorical_to_discrete
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.math import gradient
label_desc: Use image node_id 4 for calling the CategoricalToDiscreteTest obj's underlying member method code with example usage: obj.testBijectorForward() without return types