code: def get_with_pathspec_index(self, pathspec_index):
      return self.pathspec_index_cache.get(pathspec_index, None)
  
file_path: metaflow/metaflow/datastore/datastore_set.py
imports: import json
  from io import BytesIO
  from .exceptions import DataException
  from .content_addressed_store import BlobCache
label_desc: Use image node_id 3 for calling the TaskDataStoreSet obj's underlying member method code with example usage: obj.get_with_pathspec_index(pathspec_index) and returns: self