code: def testReset(self):
      acc = metrics.Sum()
      self.assertAllEqual([2.0, 3.0], acc(tf.constant([2.0, 3.0])))
      self.assertAllEqual([6.0, 8.0], acc(tf.constant([4.0, 5.0])))
      acc.reset()
      self.assertAllEqual([7.0, 8.0], acc(tf.constant([7.0, 8.0])))
  
file_path: sonnet/sonnet/src/metrics_test.py
imports: from sonnet.src import metrics
  from sonnet.src import test_utils
  import tensorflow
label_desc: Use image node_id 3 for calling the SumTest obj's underlying member method code with example usage: obj.testReset() without return types