std::string to_string(const group& x) {
if (x == invalid_group)
return "<invalid-group>";
std::string result = x.get()->module().name();
result += ":";
result += x.get()->identifier();
return result;
}
error inspect(serializer& f, group& x) {
std::string mod_name;
auto ptr = x.get();
if (!ptr)
return f(mod_name);
mod_name = ptr->module().name();
auto e = f(mod_name);
return e ? e : ptr->save(f);
}