RW.Delete(...) example with one item
err, rowsAffected = rw.Delete(ctx,
&user,
dbw.WithVersion(&user.Version),
)
RW.DeleteItems(...) example with multiple items
var rowsAffected int64
err = rw.DeleteItems(ctx,
[]interface{}{&user1, &user2},
dbw.WithRowsAffected(&rowsAffected),
)