Optional ReadonlyallowRuns deletes past the mass-delete threshold without asking.
Optional ReadonlyconfirmAsks a person to confirm a mass delete, for example by typing the count.
Optional ReadonlyonReceives a transfer event per row and a done event at the end.
Optional ReadonlysignalStops the run cleanly: no new transfer starts, partial files are removed, and finished rows are recorded.
Options of SyncSession.execute.