code: def testRankCheck(self):
      alt_inputs = [tf.placeholder(tf.float32, ()) for _ in self.inputs]
      self.assertEachInputRankAndCompatibilityChecked(
          rl.categorical_dist_double_qlearning,
          self.inputs,
          alt_inputs,
          "CategoricalDistDoubleQLearning",
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  import tensorflow.compat.v1
  from trfl import dist_value_ops
label_desc: Use image node_id 2 for calling the CategoricalDistDoubleQLearningTest obj's underlying member method code with example usage: obj.testRankCheck() without return types