293   Status NewSequentialFile(const std::string& f,  in NewSequentialFile()
306   Status NewRandomAccessFile(const std::string& f,  in NewRandomAccessFile()
319   Status NewWritableFile(const std::string& f, std::unique_ptr<WritableFile>* r,  in NewWritableFile()
388   Status FileExists(const std::string& f) override {  in FileExists()
405   Status DeleteFile(const std::string& f) override {  in DeleteFile()
430   Status GetFileSize(const std::string& f, uint64_t* s) override {  in GetFileSize()
469   Status LockFile(const std::string& f, FileLock** l) override {  in LockFile()
867   IOStatus NewSequentialFile(const std::string& f,  in NewSequentialFile()
878   IOStatus NewRandomAccessFile(const std::string& f,  in NewRandomAccessFile()
889   IOStatus NewWritableFile(const std::string& f, const FileOptions& file_opts,  in NewWritableFile()
949   IOStatus FileExists(const std::string& f, const IOOptions& /*io_opts*/,  in FileExists()
964   IOStatus DeleteFile(const std::string& f, const IOOptions& /*options*/,  in DeleteFile()
986   IOStatus GetFileSize(const std::string& f, const IOOptions& /*options*/,  in GetFileSize()
1029   IOStatus LockFile(const std::string& f, const IOOptions& /*options*/,  in LockFile()