Hide the message after the provided number of seconds.
Hide the message if Backbone client-side navigation occurs.
A unique id. If supplied, only one message with that ID will be shown at a time.
The text of the message.
Should a close button be added to the message?
Hide the newer message if there is an id collision, as opposed to the older message.
What theme class should be applied to the message? Defaults to the theme set for Messenger in general.
"info", "error" or "success" are understood by the provided themes. You can also pass your own string, and that class will be added.