func (r *rocksDBIterator) Prev() { r.setState(C.DBIterPrev(r.iter)) }
func (r *rocksDBIterator) Prev() { C.DBIterPrev(r.iter) }
func (r *rocksDBIterator) PrevKey() { r.checkEngineOpen() r.setState(C.DBIterPrev(r.iter, true /* skip_current_key_versions */)) }
func (r *rocksDBIterator) Prev() { r.checkEngineOpen() r.setState(C.DBIterPrev(r.iter)) }