code: def build_training_data_loader(self):
      return pytorch.DataLoader(
          OnesDataset(),
          batch_size=self.context.get_per_slot_batch_size(),
      )
  
file_path: determined/harness/tests/experiment/fixtures/ancient-checkpoints/0.13.13-pytorch-flex/code/model_def.py
imports: import torch
  from torch import nn
  from determined import pytorch
label_desc: Use image node_id 4 for calling the OneVarPytorchTrial obj's underlying member method code with example usage: obj.build_training_data_loader() and returns: pytorch