Mysterious xwidgets code

[Po Lu]

Does anyone know the purpose of the following code in xwidget.el?

    (define-key map "r" 'xwidget-webkit-reload)
--> (define-key map "t" (lambda () (interactive) (message "o"))) ;FIXME: ?!?
    (define-key map "\C-m" 'xwidget-webkit-insert-string)

Was `t' originally supposed to do something interesting that nobody
ever got around to implementing?

Thanks.