code: def get_idx_split(self):
      split_dict = torch.load(osp.join(self.folder, "split_dict.pt"))
      return split_dict
  
imports: from typing import Optional, Union, Dict
  import os
  import os.path
  import shutil
  from ogb.utils import smiles2graph
  from ogb.utils.url import decide_download, download_url, extract_zip
  import pandas
  import numpy
  from tqdm.auto import tqdm
  import torch
label_desc: Use image node_id 5 for calling the PCQM4MDataset obj's underlying member method code with example usage: obj.get_idx_split() and returns: split_dict