unsafe { P::put_mut(&mut new_page_, &new_curs, &k, &v, r) }

            unsafe { P::put_mut(&mut new_page_, &mut new_curs, &k, &v, r) }

            unsafe { P::put_mut(&mut new_page_, &new_curs, k, v, r) }

            unsafe { P::put_mut(&mut new_page_, &mut new_curs, k, v, r) }