code: def testChangeName(self, metric_class):
      name = "SomeMetric"
      metric = metric_class(name)
      self.assertEqual(metric.name, name)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import parameterized
  import numpy
  import tensorflow
  from tf_agents.metrics import py_metrics
  from tf_agents.trajectories import time_step
  from tf_agents.trajectories import trajectory
  from tf_agents.utils import nest_utils
label_desc: Use image node_id 2 for calling the PyMetricsTest obj's underlying member method code with example usage: obj.testChangeName(metric_class) without return types