code: def __len__(self):
      return len(self.examples)
  
file_path: xformers/xformers/benchmarks/LRA/code/dataset.py
imports: import logging
  import pickle
  import torch
  from torch.utils.data.dataset import Dataset
label_desc: Use image node_id 2 for calling the LRADataset obj's underlying member method code with example usage: obj.__len__() and returns: len