Flutter: Horizontal Stepper - auto scrolling - flutter

Question

As you may know, the Stepper widget puts step items into a row until it overflows the screen, with no way to make it scroll.
However, I found a way found in this link - https://github.com/flutter/flutter/issues/40601
Here is the code:
Widget _buildHorizontal() {
final List children = [
for (int i = 0; i < widget.steps.length; i += 1) ...[
InkResponse(
onTap: widget.steps[i].state != StepState.disabled
? () {
if (widget.onStepTapped != null) widget.onStepTapped(i);
}
: null,
canRequestFocus: widget.steps[i].state != StepState.disabled,
child: Row(
children: [
Container(
height: 72.0,
child: Center(
child: _buildIcon(i),
),
),
Container(
margin: const EdgeInsetsDirectional.only(start: 12.0),
child: _buildHeaderText(i),
),
],
),
),
if (!_isLast(i))
Container(
margin: const EdgeInsets.symmetric(horizontal: 8.0),
height: 1.0,
color: Colors.grey.shade400,
),
],
];
return Column(
children: <Widget>[
Material(
elevation: 2.0,
child: Container(
height: 65,
margin: const EdgeInsets.symmetric(horizontal: 24.0),
child: ListView(
scrollDirection: Axis.horizontal,
children: children,
),
),
),
Expanded(
child: ListView(
padding: const EdgeInsets.all(24.0),
children: <Widget>[
AnimatedSize(
curve: Curves.fastOutSlowIn,
duration: kThemeAnimationDuration,
vsync: this,
child: widget.steps[widget.currentStep].content,
),
_buildVerticalControls(),
],
),
),
],
);
}`
My issue right now is that I cannot make the ListView autoscrollable.
I have tried to use _scrollController = ItemScrollController but did not help.