next method
void
next()
Implementation
void next() {
if (ids != null && mounted) {
setState(() {
_onComplete();
activeWidgetId = activeWidgetId! + 1;
_onStart();
if (activeWidgetId! >= ids!.length) {
_cleanupAfterSteps();
if (widget.onFinish != null) {
widget.onFinish!();
}
}
});
}
}