PB_FIELD( 4, MESSAGE , OPTIONAL, STATIC , OTHER, openxc_VehicleMessage, diagnostic_response, simple_message, &openxc_DiagnosticResponse_fields),
PB_FIELD( 5, MESSAGE , OPTIONAL, STATIC , OTHER, openxc_VehicleMessage, control_command, diagnostic_response, &openxc_ControlCommand_fields),
PB_FIELD( 6, MESSAGE , OPTIONAL, STATIC , OTHER, openxc_VehicleMessage, command_response, control_command, &openxc_CommandResponse_fields),
PB_FIELD( 4, MESSAGE , OPTIONAL, STATIC , OTHER, openxc_VehicleMessage, diagnostic_response, simple_message, &openxc_DiagnosticResponse_fields),
PB_FIELD( 5, MESSAGE , OPTIONAL, STATIC , OTHER, openxc_VehicleMessage, control_command, diagnostic_response, &openxc_ControlCommand_fields),
PB_FIELD( 6, MESSAGE , OPTIONAL, STATIC , OTHER, openxc_VehicleMessage, command_response, control_command, &openxc_CommandResponse_fields),