• AuthModule : auth/auth.h
• ConfigValueType : config/value.h
• CredentialType : credential.h
• HttpMessageState : parser.h
• HttpMethod : request.h
• HttpWriterState : http/writer.h
• logger_level : logger/logger.h
• rbColor : tree.h , rbtree.c
• ResourceAction : permission.h
• StoragePutResult : storage/storage.h
• StreamHandleType : stream/stream.h