anchor.diff:      });
   
       test('post with bytes', () async {
  -      var response = await platformClient().post(
  -        serverUrl,
  -        [104, 101, 108, 108, 111],
  -        headers: {
  -          'X-Random-Header': 'Value',
  -          'X-Other-Header': 'Other Value',
  -          'User-Agent': userAgent()
  -        },
  -      );
  +      var response = await platformClient()
  +          .post(serverUrl, ASCII.encode('hello'), headers: {
  +        'X-Random-Header': 'Value',
  +        'X-Other-Header': 'Other Value',
  +        'User-Agent': userAgent()
  +      });
         var body = await response.readAsString();
   
         expect(response.statusCode, equals(200));
  
positive.code:               'x-random-header': ['Value'],
                'x-other-header': ['Other Value']
              },
              'body': [104, 101, 108, 108, 111]
            })));
      });
  
      test('post with fields', () async {
        var response = await platformClient().post(
          serverUrl,
          {'some-field': 'value', 'other-field': 'other value'},
          headers: {
            'X-Random-Header': 'Value',
            'X-Other-Header': 'Other Value',
            'User-Agent': userAgent()
          },
        );
        var body = await response.readAsString();
  
        expect(response.statusCode, equals(200));
  
negative.code:               'x-random-header': ['Value'],
                'x-other-header': ['Other Value']
              },
              'body': ASCII.encode('hello')
            })));
      });
  
      test('patch with fields', () async {
        var response = await platformClient().patch(serverUrl, {
          'some-field': 'value',
          'other-field': 'other value'
        }, headers: {
          'X-Random-Header': 'Value',
          'X-Other-Header': 'Other Value',
          'User-Agent': userAgent()
        });
        var body = await response.readAsString();
  
        expect(response.statusCode, equals(200));
  