anchor.diff:    }
   
     var dryRun = results["dry-run"] as bool;
  -  var nullSafety = results["null-safety"] as bool;
   
     var removeSources = <ErrorSource>{};
     var insertSources = <ErrorSource>{};
  
positive.code: import 'package:path/path.dart' as p;
  
  import 'package:test_runner/src/command_output.dart';
  import 'package:test_runner/src/path.dart';
  import 'package:test_runner/src/static_error.dart';
  import 'package:test_runner/src/test_file.dart';
  
negative.code: 
      if (entry is pkg_file.File) {
        await _processFile(entry,
            dryRun: dryRun, remove: removeSources, insert: insertSources);
      }
    }
  }
  