+static int bus_seat_append_can_tty(DBusMessageIter *i, const char *property, void *data) {
+ Seat *s = data;
+ dbus_bool_t b;
+
+ assert(i);
+ assert(property);
+ assert(s);
+
+ b = seat_can_tty(s);
+
+ if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int bus_seat_append_can_graphical(DBusMessageIter *i, const char *property, void *data) {
+ Seat *s = data;
+ dbus_bool_t b;
+
+ assert(i);
+ assert(property);
+ assert(s);
+
+ b = seat_can_graphical(s);
+
+ if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
+ return -ENOMEM;
+
+ return 0;
+}
+