MavenProject project = new MavenProject();
        project.setGroupId(groupId);
        project.setArtifactId(artifactId);
        return project;
    }

    static String stripAnsiCodes(String msg) {
        return msg.replaceAll("\u001b\\[[;\\d]*[ -/]*[@-~]", "");
    }

```

...필수 매개변수 `needy`를 넣지 않았기 때문에 아래와 같은 오류를 보게 됩니다:

```JSON
{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "query",
        "needy"
      ],
      "msg": "Field required",
      "input": null
    }
  ]
}
```

`needy`는 필수 매개변수이므로 URL에 반드시 설정해줘야 합니다:

```
http://127.0.0.1:8000/items/foo-item?needy=sooooneedy
```

...아래처럼 작동합니다:

}

func errUnsupportedCast(fromType, toType string) error {
	return fmt.Errorf("Cannot cast from %v to %v", fromType, toType)
}

func errCastFailure(msg string) error {
	return fmt.Errorf("Error casting: %s", msg)
}

// Allowed cast types
const (
	castBool      = "BOOL"
	castInt       = "INT"
	castInteger   = "INTEGER"
	castString    = "STRING"
	castFloat     = "FLOAT"

            "items": {"anyOf": [{"type": "string"}, {"type": "integer"}]},
        },
        "msg": {"title": "Message", "type": "string"},
        "type": {"title": "Error Type", "type": "string"},
        "input": {"title": "Input"},
        "ctx": {"title": "Context", "type": "object"},
    },
    "required": ["loc", "msg", "type"],
}

validation_error_response_definition = {
    "title": "HTTPValidationError",

	Versioning *versioning.Versioning `msg:"-"`

	// Lifecycle performs filtering based on lifecycle.
	// This will filter out objects if the most recent version should be deleted by lifecycle.
	// Is not transferred across request calls.
	Lifecycle *lifecycle.Lifecycle `msg:"-"`

	// Retention configuration, needed to be passed along with lifecycle if set.
	Retention lock.Retention `msg:"-"`

	// Replication configuration

...sin agregar el parámetro requerido `needy`, verás un error como:

```JSON
{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "query",
        "needy"
      ],
      "msg": "Field required",
      "input": null
    }
  ]
}
```

Como `needy` es un parámetro requerido, necesitarías establecerlo en la URL:

```
http://127.0.0.1:8000/items/foo-item?needy=sooooneedy

例えば、クライアントが値 `plumbus` の `tool` ヘッダーを送ろうとすると、ヘッダーパラメータ `tool` は許可されていない旨の**エラー**レスポンスが返されます:

```json
{
    "detail": [
        {
            "type": "extra_forbidden",
            "loc": ["header", "tool"],
            "msg": "Extra inputs are not permitted",
            "input": "plumbus",
        }
    ]
}
```

## アンダースコア変換の無効化 { #disable-convert-underscores }

通常のヘッダーパラメータと同様に、パラメータ名にアンダースコアがある場合は**自動的にハイフンに変換**されます。

... sem adicionar o parâmetro obrigatório `needy`, você verá um erro como:

```JSON
{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "query",
        "needy"
      ],
      "msg": "Field required",
      "input": null
    }
  ]
}
```

Como `needy` é um parâmetro obrigatório, você precisaria defini-lo na URL:

```
http://127.0.0.1:8000/items/foo-item?needy=sooooneedy

                        final String msg = ComponentUtil.getMessageManager().getMessage(displayLocale, "labels.allLanguages");
                        final Map<String, String> defaultMap = new HashMap<>(2);
                        defaultMap.put(Constants.ITEM_LABEL, msg);
                        defaultMap.put(Constants.ITEM_VALUE, "all");

```JSON
{
  "detail": [
    {
      "type": "missing",
      "loc": [
        "query",
        "needy"
      ],
      "msg": "Field required",
      "input": null
    }
  ]
}
```

Comme `needy` est un paramètre requis, vous devez le définir dans l'URL :

```
http://127.0.0.1:8000/items/foo-item?needy=sooooneedy