Where can I find documentation on versioning? My first use case would be to versión different embeddings and use it more like a storage backend than to search for KNN. Would it be possible to not create the NN graph and just use it for versioned storage? We currently use opendistro and it nicely allows doing pre and post filtering based on other document fields (other than the embedding). Therefore I think this could never be a full replacement without figuring out how to combine the rest of the document structure