code: def testSimple(self):
      converter = data_converter.AsHalfTransition(
          self._data_context, squeeze_time_dim=True
      )
      transition = tensor_spec.sample_spec_nest(
          self._data_context.transition_spec, outer_dims=[1]
      )
      converted = converter(transition)
      (transition, converted) = self.evaluate((transition, converted))
      tf.nest.map_structure(self.assertAllEqual, converted, transition)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import tensorflow.compat.v2
  from tf_agents.agents import data_converter
  from tf_agents.specs import tensor_spec
  from tf_agents.trajectories import time_step
  from tf_agents.trajectories import trajectory
  from tf_agents.utils import test_utils
label_desc: Use image node_id 2 for calling the AsHalfTransitionTest obj's underlying member method code with example usage: obj.testSimple() without return types