Is there the way to store raw documents?

Hi, is there the way to store big documents as objects under subject, but I don't want this documents to be indexed and I don't want search by this document to prevent storing not needed information and (maybe) performance issues.
It would be nice if I can get iterator of document and query subjects it belongs to.
So, how to resolve this?

Also, there is the way to store just indexes of these documents, and query docs by 3-d party DB, but it's better not to use additional dependencies.

The issue does not name any files, tests, or entry points. Start by reviewing Cayley’s storage and indexing interfaces to determine whether raw, non-indexed documents and subject iteration are supported. Done would require a clearly scoped design and implementation path for storing and retrieving such documents without unnecessary indexing.

Written by the indexing model from the issue text.