Flutter: How to flip an icon to get mirror effect?

Question

I want to flip this replay material icon so that it can be used as forward.

Present Icon:

Required Result:

Answer 1

Before:

---

After:

import 'dart:math' as math; // import this

Transform(
  alignment: Alignment.center,
  transform: Matrix4.rotationY(math.pi),
  child: Icon(Icons.rotate_left, size: 100,),
)