code: def build_validation_data_loader(self):
      return pytorch.DataLoader(
          OnesDataset(self.dataset_len),
          batch_size=self.context.get_per_slot_batch_size(),
      )
  
imports: import random
  from typing import Any, Dict, Tuple
  import numpy
  import torch
  from torch import nn
  from determined import pytorch
label_desc: Use image node_id 5 for calling the NoopPyTorchTrial obj's underlying member method code with example usage: obj.build_validation_data_loader() and returns: pytorch