code: def get_urls(filename):
      res = []
      with open(filename, "r") as f:
          res = f.readlines()
      return res
  
imports: import collections
  import errno
  import numpy
  import os
  import os.path
  import torch
  from torch_geometric.data import Data
  from torch_points_kernels.points_cpu import ball_query
  import imageio
  from tqdm.auto import tqdm
  from torch_points3d.core.data_transform import GridSampling3D, SaveOriginalPosId
  from torch_geometric.transforms import Compose
  import torch_points3d.datasets.registration.fusion
  from torch_cluster import fps
label_desc: Use image node_id 4 for calling a global function with example usage: get_urls(filename) and returns: res