anchor.diff:  
     const CheckboxSettingsListTile({
       Key? key,
  +    this.subtitleIsTwoLines = false,
       required this.leading,
       required this.title,
       this.subtitle,
  
positive.code: import 'package:flutter/material.dart';
  
  class CheckboxSettingsListTile extends StatelessWidget {
    final Widget leading;
    final String title;
    final String? subtitle;
  
negative.code:             ),
            ],
          ),
          title: Text(
            title,
            overflow: TextOverflow.ellipsis,
          ),
          subtitle: subtitle != null
              ? Text(
                  subtitle!,
                  overflow: subtitleIsTwoLines ? null : TextOverflow.ellipsis,
                  maxLines: subtitleIsTwoLines ? 2 : 1,
                  style: Theme.of(context).textTheme.subtitle2,
                )
              : null,
          value: value,
          onChanged: onChanged,
        ),
  