bool is_valid(const openxc_VehicleMessage& v);
const openxc_SimpleMessage build_SimpleMessage(const std::string& name, const openxc_DynamicField& value);
+const openxc_DynamicField build_DynamicField(json_object* value);
const openxc_DynamicField build_DynamicField(const char* value);
const openxc_DynamicField build_DynamicField(const std::string& value);
const openxc_DynamicField build_DynamicField(double value);