有没有办法在ErrorTextField中包含多行详细信息？

import 'package:flutter/material.dart';

class MultiLineErrorTextField extends StatefulWidget {
  @override
  _MultiLineErrorTextFieldState createState() => _MultiLineErrorTextFieldState();
}

class _MultiLineErrorTextFieldState extends State<MultiLineErrorTextField> {
  String _errorMessage = '';
  TextEditingController _textEditingController = TextEditingController();

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        TextFormField(
          controller: _textEditingController,
          decoration: InputDecoration(
            labelText: 'Text',
          ),
        ),
        if (_errorMessage.isNotEmpty)
          Container(
            padding: EdgeInsets.all(8.0),
            color: Colors.red,
            child: Text(
              _errorMessage,
              style: TextStyle(color: Colors.white),
            ),
          ),
        RaisedButton(
          onPressed: () {
            // Perform validation and set error message if necessary
            if (_textEditingController.text.isEmpty) {
              setState(() {
                _errorMessage = 'Text cannot be empty';
              });
            } else {
              setState(() {
                _errorMessage = '';
              });
            }
          },
          child: Text('Submit'),
        ),
      ],
    );
  }
}