code: def value(self):
      if self.count == 0:
          return 0
      else:
          return self.cumulative_dice / self.count
  
imports: from collections import defaultdict, deque
  import datetime
  import time
  import torch
  import torch.nn.functional
  import torch.distributed
  import errno
  import os
  from .dice_coefficient_loss import multiclass_dice_coeff, build_target
label_desc: Use image node_id 3 for calling the DiceCoefficient obj's underlying member method code with example usage: obj.value() and returns: int, unknown