code: def testBatchSizeThree(self):
      self.assertAllEqual(
          self.evaluate(self._scalarizer(self._batch_multi_objectives)),
          self.evaluate(tf.constant([-1, -5, -15], dtype=tf.float32)),
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import copy
  import tensorflow.compat.v2
  from tf_agents.bandits.multi_objective import multi_objective_scalarizer
label_desc: Use image node_id 5 for calling the ChebyShevScalarizerTest obj's underlying member method code with example usage: obj.testBatchSizeThree() without return types