code: def download(self):
      url = self.meta_info["url"]
      if decide_download(url):
          path = download_url(url, self.original_root)
          extract_zip(path, self.original_root)
          os.unlink(path)
          shutil.rmtree(self.root)
          shutil.move(
              osp.join(self.original_root, self.download_name),
              self.root,
          )
  
      else:
          print("Stop downloading.")
          shutil.rmtree(self.root)
          exit(-1)
  
file_path: ogb/ogb/graphproppred/dataset_pyg.py
imports: import pandas
  import shutil, os
  import os.path
  import torch
  import numpy
  from torch_geometric.data import InMemoryDataset
  from ogb.utils.url import decide_download, download_url, extract_zip
  from ogb.io.read_graph_pyg import read_graph_pyg
label_desc: Use image node_id 6 for calling the PygGraphPropPredDataset obj's underlying member method code with example usage: obj.download() without return types