class_docstr: LabeledVideoPaths contains pairs of video path and integer index label.
class_docstr_tok: ["LabeledVideoPaths","contains","pairs","of","video","path","and","integer","index","label","."]
code: def path_prefix(self, prefix):
      self._path_prefix = prefix
  
file_path: pytorchvideo/pytorchvideo/data/labeled_video_paths.py
imports: from __future__ import annotations
  import os
  import pathlib
  from typing import List, Optional, Tuple
  from iopath.common.file_io import g_pathmgr
  from torchvision.datasets.folder import make_dataset
label_desc: Use image node_id 5 for calling the LabeledVideoPaths obj's underlying member method code with example usage: obj.path_prefix(prefix) without return types