Function serialize

example/cacheHierarchy/fkYAML/node.hpp:10782–10786

@brief Serialize the given Node value. @param node A Node object to be serialized. @return std::string A serialization result of the given Node value.

    /// @param node A Node object to be serialized.
    /// @return std::string A serialization result of the given Node value.
    std::string serialize(const BasicNodeType& node) {
        std::string str {};
        serialize_document(node, str);
        return str;
    } // LCOV_EXCL_LINE

    std::string serialize_docs(const std::vector<BasicNodeType>& docs) {
        std::string str {};