53   std::unique_ptr<WritableFileWriter> writable;  in PersistRocksDBOptions()  local
54   writable.reset(new WritableFileWriter(std::move(wf), file_name, EnvOptions(),  in PersistRocksDBOptions()
59   writable->Append(option_file_header + "[" +  in PersistRocksDBOptions()
65   writable->Append("  options_file_version=" +  in PersistRocksDBOptions()
68   writable->Append("\n[" + opt_section_titles[kOptionSectionDBOptions] +  in PersistRocksDBOptions()
73     writable->Close();  in PersistRocksDBOptions()
76   writable->Append(options_file_content + "\n");  in PersistRocksDBOptions()
80     writable->Append("\n[" + opt_section_titles[kOptionSectionCFOptions] +  in PersistRocksDBOptions()
85       writable->Close();  in PersistRocksDBOptions()
88     writable->Append(options_file_content + "\n");  in PersistRocksDBOptions()
92       writable->Append("[" + opt_section_titles[kOptionSectionTableOptions] +  in PersistRocksDBOptions()
100       writable->Append(options_file_content + "\n");  in PersistRocksDBOptions()
103   writable->Sync(true /* use_fsync */);  in PersistRocksDBOptions()
104   writable->Close();  in PersistRocksDBOptions()