Window listener event for onclick of notify?

Hello, 
I'm using the macgap.notice.notify to trigger notifications, but I can't see anywhere where I can add a click listener to do something on my webapp.

`macgap.notice.notify({
                        type   : 'sheet',
                        title  : header,
                        sound  : false,
                        content: message
                    })`

Does anybody know how to? 
