func (r *rocksDBIterator) Next() { r.setState(C.DBIterNext(r.iter)) }
func (r *rocksDBIterator) Next() { C.DBIterNext(r.iter) }
func (r *rocksDBIterator) NextKey() { r.checkEngineOpen() r.setState(C.DBIterNext(r.iter, true /* skip_current_key_versions */)) }
func (r *rocksDBIterator) Next() { r.checkEngineOpen() r.setState(C.DBIterNext(r.iter)) }