+const char* service_state_to_string(ServiceState i);
+ServiceState service_state_from_string(const char *s);
+
+const char* service_restart_to_string(ServiceRestart i);
+ServiceRestart service_restart_from_string(const char *s);
+
+const char* service_type_to_string(ServiceType i);
+ServiceType service_type_from_string(const char *s);
+
+const char* service_exec_command_to_string(ServiceExecCommand i);
+ServiceExecCommand service_exec_command_from_string(const char *s);
+