29 void add_next(
param& a_parent,
const std::string& an_addr_in_parent,
const std::string& a_next_addr,
const std::string& a_value );
auto parse(const std::basic_string< CharT, Traits, Alloc > &format, Parsable &tp) -> decltype(from_stream(std::declval< std::basic_istream< CharT, Traits > & >(), format.c_str(), tp), parse_manip< Parsable, CharT, Traits, Alloc >