log_info("AlterSomething() called, got %s, returning %s", s, n);
+ /* This should fail, since the return type doesn't match */
+ assert_se(sd_bus_reply_method_return(m, "u", 4711) == -ENOMSG);
+
r = sd_bus_reply_method_return(m, "s", n);
assert_se(r >= 0);