finish(detail) {
        if (detail) {
            w2utils.extend(this.detail, detail)
        }
        this.phase = 'after'
        this.owner.trigger.call(this.owner, this)
    }
Part of w2ui 2.0 library
 - Dependencies: w2utils
 - on/off/trigger methods id not showing in help
 - refactored with event object

Chanes in 2.0.+
- added unmount that cleans up the box