public time_t get_visited (string uri) throws BookmarkFileError
Warning: get_visited is deprecated since 2.66. Use get_visited_date_time.
Gets the time the bookmark for
uri was last visited.
Use get_visited_date_time instead, as `time_t` is deprecated due to the year 2038 problem.
In the event the URI cannot be found, -1 is returned and throws is set to g_bookmark_file_error_uri_not_found.
a valid URI