Adding new documents to a LSH object

[retrography]

I may be wrong, but it seems to me there is no way to add new documents to an already-constructed LSH object. I would like to submit this as a feature request.

A related useful functionality is to make a LSH query using a document that is not present in a LSH object (does my text have a match, although I don't want to make it a part of the reference corpus).