Testing the TextField decoration

TextFieldText.dart

import 'package:flutter/material.dart';

final Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData.dark().copyWith(scaffoldBackgroundColor: darkBlue),
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: MyWidget(),
        ),
      ),
    );
  }
}

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final inputDecorationTheme = InputDecorationTheme(labelStyle: Theme.of(context).textTheme.subtitle1);
    print(inputDecorationTheme.labelStyle);
    return Padding(
        padding: const EdgeInsets.all(16.0),
        child: TextField(
          controller: TextEditingController(),
          decoration: InputDecoration(
            hintStyle: inputDecorationTheme.labelStyle,
            helperText: 'This is a helper',
            labelStyle: inputDecorationTheme.labelStyle,
            labelText: 'This is a label',
          ),
        ));
  }
}