code: def get_chunk_path(self, i):
      return os.path.join(self.cache_fol_path, f"data_{i:05d}.chunk")
  
imports: import math
  import numpy
  import os
  from typing import Generator, Union, Sequence
  import torch
  import torch.utils.data.dataset
label_desc: Use image node_id 4 for calling the ChunkedFilesDataCache obj's underlying member method code with example usage: obj.get_chunk_path(i) and returns: os