### Model for Output Response Data { #model-for-output-response-data }

If you interact with the docs and check the response, even though the code didn't add anything in one of the `description` fields, the JSON response contains the default value (`null`):

<div class="screenshot">
<img src="/img/tutorial/separate-openapi-schemas/image02.png">
</div>

func (j *xlMetaV2Version) unmarshalV(v uint8, bts []byte) (o []byte, err error) {
	if v > xlMetaVersion {
		return bts, fmt.Errorf("unknown xlMetaVersion: %d", v)
	}

	// Clear omitempty fields:
	if j.ObjectV2 != nil && len(j.ObjectV2.PartIndices) > 0 {
		j.ObjectV2.PartIndices = j.ObjectV2.PartIndices[:0]
	}
	o, err = j.UnmarshalMsg(bts)

},setMessageInTopOfForm:function(b,c,d,e){var f='<div class="{errorMessageClass} alert alert-danger"><strong>{errorTitle}</strong><ul>{fields}</ul></div>',g=!1;if("function"!=typeof d.submitErrorMessageCallback||(g=d.submitErrorMessageCallback(b,c,d))){var h={errorTitle:e.errorTitle,fields:"",errorMessageClass:d.errorMessageClass};a.each(c,function(a,b){h.fields+="<li>"+b+"</li>"}),a.each(h,function(a,b){f=f.replace("{"+a+"}",b)}),g?g.html(f):b.children().eq(0).before(a(f))}}};a.formUtils=a.exte...

    //
    /**
     *
     * @param artifact an artifact
     * @return found artifact
     * @since 3.0-alpha-3
     */
    Artifact find(Artifact artifact);

    /**
     * Finds the versions of the specified artifact that are available in this repository.
     *
     * @param artifact The artifact whose available versions should be determined, must not be {@code null}.

                  }
                  /*
                   * Also look up an earlier node so that, if the graph is using MapRetrievalCache,
                   * we read one of the fields declared in that class.
                   */
                  Set<Integer> unused = network.successors(first);
                  return null;
                }
              }));
    }

    /*

		principalID = cred.ParentUser
	}

	// Success.
	m := map[string]string{
		"region":          region,
		"principalId":     principalID,
		"sourceIPAddress": handlers.GetSourceIP(r),
		// Add more fields here.
	}
	if rangeField := r.Header.Get(xhttp.Range); rangeField != "" {
		m["range"] = rangeField
	}

	if _, ok := r.Header[xhttp.MinIOSourceReplicationRequest]; ok {

- Added driver-owned fields in `ResourceSlice` to mark whether the device was shareable among multiple resource claims (or requests) and to specify how each capacity could be shared between different requests.
  - Added user-owned fields in `ResourceClaim` to specify resource requirements against each device capacity.

 * </ul>
 *
 * @author Kurt Alfred Kluever
 * @since 11.0
 */
@GwtCompatible
public final class HttpHeaders {
  private HttpHeaders() {}

  // HTTP Request and Response header fields

  /** The HTTP {@code Cache-Control} header field name. */
  public static final String CACHE_CONTROL = "Cache-Control";

  /** The HTTP {@code Content-Length} header field name. */

In OkHttp some fields of the address come from the URL (scheme, hostname, port) and the rest come from the [OkHttpClient](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-ok-http-client/).

    public static final int STATUS_NOT_SUPPORTED = 0x00000001;
    /** Status indicating insufficient resources for SMB Direct */
    public static final int STATUS_INSUFFICIENT_RESOURCES = 0x00000002;

    // Message fields
    private int minVersion;
    private int maxVersion;
    private int negotiatedVersion;
    private int reserved = 0;
    private int creditsGranted;
    private int creditsRequested;