anchor.diff:    print(metadata.childProjects);
   }
   
  -mainA() async {
  +main() async {
     final Directory installDir = await Directory.systemTemp.createTemp();
   
     print(installDir);
  
positive.code:       installDir);
  
    print(await gitDir.isWorkingTreeClean());
  }
  
  mainX() async {
  
negative.code: import 'dart:async';
  import 'package:git/git.dart';
  
  mainB() async {
    final ProjectMetaData metadata =
        await ProjectMetaData.fromProjectYaml(p.absolute('project.yaml'));
  
  