const char* dbus_message_get_name (DBusMessage *message);
const char* dbus_message_get_service (DBusMessage *message);
-void dbus_message_set_sender (DBusMessage *message,
+dbus_bool_t dbus_message_set_sender (DBusMessage *message,
const char *sender);
const char* dbus_message_get_sender (DBusMessage *message);