...then because `description` has a default value, if you **don't return anything** for that field, it will still have that **default value**.

### 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">

                            }
                        }
                    }
                } catch (Exception e) {
                    // here we can have: IO. ZIP or Plexus Conf Ex: but we should not interfere with user intent
                }
            }
        }
        return null;
    }

    private static String mayGetChild(XmlNode node, String child) {
        XmlNode c = node.child(child);

ARG BASE_IMAGE=ubuntu:22.04@sha256:58b87898e82351c6cf9cf5b9f3c20257bb9e2dcf33af051e12ce532d7f94e3fe
FROM $BASE_IMAGE AS devel
# See https://docs.docker.com/reference/dockerfile/#understand-how-arg-and-from-interact
# on why we cannot reference BASE_IMAGE again unless we declare it again.
################################################################################

# Install devtoolset build dependencies

* This also allows using automatic **client code generation** in many languages.

### Automatic docs { #automatic-docs }

Interactive API documentation and exploration web user interfaces. As the framework is based on OpenAPI, there are multiple options, 2 included by default.

* Esto también permite el uso de **generación de código cliente automática** en muchos idiomas.

### Documentación automática { #automatic-docs }

Interfaces web de documentación y exploración de APIs interactivas. Como el framework está basado en OpenAPI, hay múltiples opciones, 2 incluidas por defecto.

	source := getSource(2)
	return func(sz int64, err error) {
		globalTrace.Publish(sftpTrace(s, startTime, source, user, err, sz))
	}
}

// NewSFTPDriver initializes sftp.Handlers implementation of following interfaces
//
// - sftp.Fileread
// - sftp.Filewrite
// - sftp.Filelist
// - sftp.Filecmd
func NewSFTPDriver(perms *ssh.Permissions, remoteIP string) sftp.Handlers {
	handler := &sftpDriver{

      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain
      separable from, or merely link (or bind by name) to the interfaces of,
      the Work and Derivative Works thereof.

      "Contribution" shall mean any work of authorship, including
      the original version of the Work and any modifications or additions

      represent, as a whole, an original work of authorship. For the purposes
      of this License, Derivative Works shall not include works that remain
      separable from, or merely link (or bind by name) to the interfaces of,
      the Work and Derivative Works thereof.

      "Contribution" shall mean any work of authorship, including
      the original version of the Work and any modifications or additions

///

## Declare mais metadados { #declare-more-metadata }

Você pode adicionar mais informações sobre o parâmetro.

Essas informações serão incluídas no OpenAPI gerado e usadas pelas interfaces de documentação e por ferramentas externas.

/// note | Nota

Tenha em mente que ferramentas diferentes podem ter níveis diferentes de suporte ao OpenAPI.

* モデルの<a href="http://json-schema.org" class="external-link" target="_blank">JSONスキーマ</a>定義を生成し、好きな場所で使用することができます。
* これらのスキーマは、生成されたOpenAPIスキーマの一部となり、自動ドキュメントの<abbr title = "User Interfaces">UI</abbr>に使用されます。

## 自動ドキュメント生成

モデルのJSONスキーマはOpenAPIで生成されたスキーマの一部になり、対話的なAPIドキュメントに表示されます:

<img src="/img/tutorial/body/image01.png">

そして、それらが使われる *パスオペレーション* のそれぞれのAPIドキュメントにも表示されます: