anchor.diff:          new SdkExtUriResolver(_createPackagesFolderPackageMap(project)));
       }
   
  +    resolvers.add(new FileUriResolver());
  +
       context.sourceFactory = new SourceFactory(resolvers, packages);
       AnalysisEngine.instance.logger = new _Logger();
   
  
positive.code:     context.analysisOptions = new AnalysisOptionsImpl()..cacheSize = 512;
      List<UriResolver> resolvers = [
          new DartUriResolver(sdk),
          new FileUriResolver(),
          new PackageUriResolver([new JavaFile(project.packagePath)])
      ];
  
  
negative.code: 
  import 'common.dart';
  
  class CheckCommand extends Command {
    CheckCommand() : super('check',
        'analyze all the source code in the project - fail if there are any errors');
  