struct signals_found find_signals(const openxc_DynamicField &key);
void find_diagnostic_messages(const openxc_DynamicField &key, std::vector<std::shared_ptr<diagnostic_message_t> >& found_signals);
struct signals_found find_signals(const openxc_DynamicField &key);
void find_diagnostic_messages(const openxc_DynamicField &key, std::vector<std::shared_ptr<diagnostic_message_t> >& found_signals);