boost::optional<std::string> hash (std::string id) const;
boost::optional<std::string> type (std::string id) const;
+ void clear_assets();
void add_asset (std::string id, boost::optional<std::string> annotation_text, std::string hash, int64_t size, std::string type);
void write (boost::filesystem::path file, std::shared_ptr<const CertificateChain> signer) const;