findIn method
Implementation
@override
String? findIn(String directoryPath) {
final result = super.fileWithin(PubspecLock.fileName, directoryPath);
// this is the correct approach for workspaces, but if ANY packages depend
// on Flutter, then all tools will resolve as Flutter.
// if (result == null) {
// return super.nearest(PubspecLock.fileName);
// }
return result;
}