124   virtual void FindShortestSeparator(std::string* /*start*/,  in FindShortestSeparator()
127   virtual void FindShortSuccessor(std::string* /*key*/) const override {}  in FindShortSuccessor()
500               const ROCKSDB_NAMESPACE::Slice& value, std::string* /*new_value*/,  in Filter()
618     Status NewRandomAccessFile(const std::string& /*f*/,  in NewRandomAccessFile()
634         const std::string& /*name*/,  in NewDirectory()
644     Status GetChildren(const std::string& /*dir*/,  in GetChildren()
645                        std::vector<std::string>* /*r*/) override {  in GetChildren()
652     Status CreateDir(const std::string& /*d*/) override {  in CreateDir()
655     Status CreateDirIfMissing(const std::string& /*d*/) override {  in CreateDirIfMissing()
658     Status DeleteDir(const std::string& /*d*/) override {  in DeleteDir()
670     Status GetFileModificationTime(const std::string& /*fname*/,  in GetFileModificationTime()
675     Status RenameFile(const std::string& /*s*/,  in RenameFile()
680     Status LinkFile(const std::string& /*s*/,  in LinkFile()
685     Status LockFile(const std::string& /*f*/, FileLock** /*l*/) override {  in LockFile()
722                                  std::string* /*new_value*/,  in PartialMergeMulti()
745               const Slice& /*existing_value*/, std::string* /*new_value*/,  in Filter()