code: def set_helper(self, helper):
      self.helper = helper
  
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 2 for calling the MetricContainer obj's underlying member method code with example usage: obj.set_helper(helper) without return types