virtual Status tensorflow::WritableFile::Sync()=0
virtual Status tensorflow::WritableFile::Append(const StringPiece &data)=0
virtual Status tensorflow::WritableFile::Flush()=0
A file abstraction for sequential writing. The implementation must provide buffering since callers may append small fragments at a time to the
virtual Status tensorflow::WritableFile::Close()=0
tensorflow::WritableFile::WritableFile()