code: def __init__(self, preloaded):
      self._preloaded = preloaded
  
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 1 to create a new ImmutableBlobCache object from inherited base classes: BlobCache with example: obj = ImmutableBlobCache(preloaded)