class_docstr: Hold a path of file within a zip file.
  
  Args:
      path (str): The convention is <path_to_zip>:<relative_path_inside_zip>.
          Let's assume there is a zip file /some/location/foo.zip
          and inside of it is a json file located at /data/file1.json,
          Then we expect path = "/some/location/foo.zip:/data/file1.json".
code: def from_paths(cls, zip_path: str, file_path: str):
      return cls(zip_path + cls.INFO_PATH_SEP + file_path)
  
file_path: audiocraft/audiocraft/data/zip.py
imports: import typing
  import zipfile
  from dataclasses import dataclass
  from functools import lru_cache
  from typing_extensions import Literal
label_desc: Use image node_id 2 for calling the PathInZip obj's underlying member method code with example usage: obj.from_paths(cls, zip_path, file_path) and returns: cls