code: def _reset(self):
      self.total_loss = 0
      self.num_batches = 0
  
file_path: pytext/pytext/metric_reporters/disjoint_multitask_metric_reporter.py
imports: from typing import Dict, Optional
  from pytext.common.constants import BatchContext
  from .metric_reporter import MetricReporter
label_desc: Use image node_id 2 for calling the DisjointMultitaskMetricReporter obj's underlying member method code with example usage: obj._reset() without return types