code: def __init__(self, dp: IterDataPipe):
      super().__init__()
      self.dp = dp
  
file_path: pytorch_geometric/examples/datapipe.py
imports: import argparse
  import os.path
  import time
  import torch
  from torchdata.datapipes.iter import FileLister, FileOpener, IterDataPipe
  from torch_geometric.data import Data, download_url, extract_zip
label_desc: Use image node_id 1 to create a new MeshOpener object from inherited base classes: IterDataPipe with example: obj = MeshOpener(dp)