Is there an equivalent of NK3''s active:sqlTransactionWrapper in NK4?

Searching in the backend fulcrum for "sqlTransactionWrapper" turns up http://127.0.0.1:1060/doc/source/doc:mod-db:transaction (which is a blank screen). This made me think it was an undocumented accessor, however I couldn''t see any sign of it in urn:org:netkernel:mod:db when looking in Space Explorer.

Cheers,

Chris