code: def reset(self):
      for metric in self.metrics:
          metric.reset()
  
imports: import torch
  from .utils import th_matrixcorr
  from .meters.averagemeter import AverageMeter
  from .callbacks import Callback
  from .losses import lovaszloss, hingeloss, dice_coeff
label_desc: Use image node_id 3 for calling the MetricContainer obj's underlying member method code with example usage: obj.reset() without return types