CSV import via REST interface

Currently it is possible to import a CSV file located either on the server or on a remote machine by executing stardog-admin command with --server option specified, but is it also possible to perform the same via the existing /admin/virtual_graphs REST interface, e.g. POST with the corresponding body parameters? If yes, an example call will be highly appreciated.

I think, also when Stardog is running within a cloud infrastructure, e.g. AWS, then S3 support will also be great benefit for the product.