If you wanna send RDF format just use txn.Mutate(ctx, mu). It accepts JSON (if so) and RDF. In case of RDF you use SetNquads and DeleteNquads instead of SetJson.
If you wanna send RDF format just use txn.Mutate(ctx, mu). It accepts JSON (if so) and RDF. In case of RDF you use SetNquads and DeleteNquads instead of SetJson.