anchor.diff:    static Future<CliAppFixture> create(String appScriptPath) async {
       final Process process = await Process.start(
         Platform.resolvedExecutable,
  -      <String>['--observe=0', appScriptPath],
  +      <String>['--observe=0', '--pause-isolates-on-start', appScriptPath],
       );
   
       final Stream<String> lines =
  
positive.code:       serviceConnection,
        vm.isolates,
      );
    }
  
    String get scriptSource {
  
negative.code: import 'package:devtools/src/vm_service_wrapper.dart';
  import 'package:vm_service_lib/vm_service_lib.dart';
  import 'package:vm_service_lib/vm_service_lib_io.dart';
  
  import '../integration_tests/integration.dart';
  
  class AppFixture {
    AppFixture._(
  