class_docstr: This :class:`Metric` breaks with the typical ``Metric`` API and just stores values that were
  computed in some fashion outside of a ``Metric``.  If you have some external code that computes
  the metric for you, for instance, you can use this to report the average result using our
  ``Metric`` API.
code: def reset(self):
      self._total_value = 0.0
      self._count = 0
  
file_path: magnitude/pymagnitude/third_party/allennlp/training/metrics/average.py
imports: from __future__ import division
  from __future__ import absolute_import
  from allennlp.training.metrics.metric import Metric
label_desc: Use image node_id 4 for calling the Average obj's underlying member method code with example usage: obj.reset() without return types