anchor.diff:      late FakeVM fakeVM;
       late FakeIsolate fakeIsolate;
       late VMServiceFlutterDriver driver;
  +    late File logFile;
       int driverId = -1;
   
       setUp(() {
  
positive.code: 
          await driver.waitFor(find.byTooltip('foo'), timeout: _kTestTimeout);
  
          final File file = File(path.join(testOutputsDirectory, 'flutter_driver_commands_$driverId.log'));
          final bool exists = file.existsSync();
          expect(exists, false, reason: 'because ${file.path} exists');
        });
      });
    });
  
negative.code: 
          await driver.waitFor(find.byTooltip('foo'), timeout: _kTestTimeout);
  
          final bool exists = logFile.existsSync();
          expect(exists, true, reason: 'Not found ${logFile.path}');
  
          final String commandLog = await logFile.readAsString();
          const String waitForCommandLog = '>>> {command: waitFor, timeout: $_kSerializedTestTimeout, finderType: ByTooltipMessage, text: foo}';
          const String responseLog = '<<< {isError: false, response: {status: ok}}';
  
  