516   explicit InternalIteratorFromIterator(Iterator* it) : it_(it) {}  in InternalIteratorFromIterator()
517   bool Valid() const override { return it_->Valid(); }  in Valid()
518   void Seek(const Slice& target) override { it_->Seek(target); }  in Seek()
519   void SeekForPrev(const Slice& target) override { it_->SeekForPrev(target); }  in SeekForPrev()
520   void SeekToFirst() override { it_->SeekToFirst(); }  in SeekToFirst()
521   void SeekToLast() override { it_->SeekToLast(); }  in SeekToLast()
522   void Next() override { it_->Next(); }  in Next()
523   void Prev() override { it_->Prev(); }  in Prev()
524   Slice key() const override { return it_->key(); }  in key()
525   Slice value() const override { return it_->value(); }  in value()
526   Status status() const override { return it_->status(); }  in status()
529   std::unique_ptr<Iterator> it_;  member in ROCKSDB_NAMESPACE::InternalIteratorFromIterator