code: def set_epoch(self, epoch):
      self._epoch = epoch
  
imports: import itertools
  from typing import Any, Optional
  import warnings
  import numpy
  import torch
  from torch.utils.data.sampler import Sampler
  import dinov2.distributed
label_desc: Use image node_id 4 for calling the EpochSampler obj's underlying member method code with example usage: obj.set_epoch(epoch) without return types