How To Create Call Fat Arrow One Line Function Using Flutter

import 'package:flutter/material.dart';
void main(){
  runApp(MyApp());
}
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: MyHomePage(),
    );
  }
}
class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> with SingleTickerProviderStateMixin {
  void shortFunction() => print('Fat Arrow One Line Function Called');

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.black,
      appBar: AppBar(
        backgroundColor: Colors.blue[700],
        title: Text('Fat Arrow One Line Function'),
      ),
            body: Center(
                child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[
                      Container(
                          child: RaisedButton(
                            onPressed: () => shortFunction(),
                            child: Text('Call One Line Short Function'),
                            textColor: Colors.white,
                            color: Colors.blue[700],
                          )
                      ),
                    ])
            )
    );
  }
}