code: def __len__(self):
      return 1
  
file_path: ogb/ogb/nodeproppred/dataset.py
imports: import pandas
  import shutil, os
  import os.path
  from ogb.utils.url import decide_download, download_url, extract_zip
  from ogb.io.read_graph_raw import read_csv_graph_raw, read_csv_heterograph_raw, read_node_label_hetero, read_nodesplitidx_split_hetero, read_binary_graph_raw, read_binary_heterograph_raw
  import torch
  import numpy
label_desc: Use image node_id 5 for calling the NodePropPredDataset obj's underlying member method code with example usage: obj.__len__() and returns: int