Method GetPK

src/storage/iterator.h:35–35

    virtual void Next() = 0;
    virtual fedb::base::Slice GetValue() const = 0;
    virtual std::string GetPK() const { return std::string(); }
    virtual uint64_t GetKey() const = 0;
    virtual void SeekToFirst() = 0;
    virtual void SeekToLast() {}