title: org.codehaus.jackson.JsonParseException: Unrecognized field '_transferSize' in response element, While reading HAR file by java
body: <p>this code works perfectly if there is no field called _transferSize, 
  sample har : </p>
  
  <pre><code>"cookies": [
              {
                "name": "x-amz-captcha-1",
                "value": "1577615972915416",
                "path": "/",
                "expires": "2020-12-28T08:39:32.000Z",
                "httpOnly": false,
                "secure": false
              },
              {
                "name": "x-amz-captcha-2",
                "value": "PKRgLIISQDY1ubrOgWIOQQ==",
                "path": "/",
                "expires": "2020-12-28T08:39:32.000Z",
                "httpOnly": false,
                "secure": false
              }
            ],
            "content": {
              "size": 0,
              "mimeType": "x-unknown"
            },
            "redirectURL": "/",
            "headersSize": -1,
            "bodySize": -1,
            "_transferSize": 553
          },
  </code></pre>
  
  <p>I was trying to get all properties by HarLib java library.
  code</p>
  
  <pre><code>ObjectMapper mapper = new ObjectMapper();
              mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
              System.out.println("Harpath : " + harPath);
              File f = new File(harPath);
              HarFileReader r = new HarFileReader();
              HarLog log = r.readHarFile(f);
              HarEntries entries = log.getEntries();
              System.out.println(entries);
  
              //          HarHeaders s =  entries.getEntries().get(1).getResponse().getHeaders();
              //          List&lt;HarHeader&gt; ss = s.getHeaders();
              //          for (HarHeader harHeader : ss) {
              //              System.out.println(harHeader.getValue());
              //          }
  
              //          System.out.println("elements on entries : " + entries.getEntries().size());
              //System.out.println(ss.get(5).getName() +"="+ss.get(5).getValue());
  </code></pre>
  
  <p>can anyone help me to get values of each KEYS, so that can get map and get all values?</p>