anchor.diff:      
       test('Loopback connection in each request (T06).', () {
         //given
  -      Future mockExecutorWithLoopbackConnection(ServerRequest request) {
  +      var loopBackConnection = new MockConnection();
  +      var createLoopBackConnection = new MockConnection()
  +        ..when(callsTo('call')).alwaysReturn(loopBackConnection);
  +
  +      var requestHandler = new MultiRequestHandler(createLoopBackConnection);
           
  -        expect(request.loopBack, equals(createLoopBackConnection(requestHandler, 1)));
  -        
  -        return new Future.value('dummyType response');
  -      }
  -      
  -      requestHandler.registerDefaultHandler(mockExecutorWithLoopbackConnection);
  -      
         var httpRequest = new MockHttpRequest(JSON.encode(
             [new PackedRequest(42, new ClientRequest('dummyType',15))]));
         Request request = new Request('json', httpRequest.httpBody.body,
             httpRequest.response, httpRequest.headers, httpRequest, {});
  -
  +        
         //when
         requestHandler.handleHttpRequest(request);
  -
  +      
         //then
  -      var closeCalled = expectAsync0(() {
  -        verifyCorrectRequestMetaData(request, HttpStatus.OK);
  -        verifyCorrectRequestContent(request,
  -            '[{"id":42,"response":"dummyType response"}]');
  -      });
  -      request.response.when(callsTo('close')).alwaysCall(closeCalled);
  +      createLoopBackConnection.getLogs(callsTo('call', requestHandler))
  +        .verify(happenedOnce);
       });
     });
   
  
positive.code: class MockHttpBody extends Mock implements HttpBody {}
  class MockHttpResponse extends Mock implements HttpResponse {}
  class MockHttpHeaders extends Mock implements HttpHeaders {}
  
  class MockHttpRequest extends Mock implements HttpRequest {
    Mock httpBody = new MockHttpBody();
  
negative.code:   }
  }
  
  Future mockHttpBodyExctractor(MockHttpRequest request) =>
      new Future.value(request.httpBody);
  
  void main() {
    group('MultiRequestHandler', () {
      MultiRequestHandler requestHandler;
  
      setUp(() {
        requestHandler = new MultiRequestHandler();
      });
  
      verifyCorrectRequestMetaData(request, expectedHttpStatusCode) {
  