例えば、上記のモデルは以下の様なJSON「`オブジェクト`」(もしくはPythonの `dict` ) を宣言しています:

```JSON
{
    "name": "Foo",
    "description": "An optional description",
    "price": 45.2,
    "tax": 3.5
}
```

...`description` と `tax` はオプショナル (デフォルト値は `None`) なので、以下のJSON「`オブジェクト`」も有効です:

```JSON
{
    "name": "Foo",
    "price": 45.2
}
```

## パラメータとして宣言

            "departmentNumber", null, false, false, false, "keyword", 0, 0, null, null, false, null, null, null, null, null, false);
    protected final ColumnInfo _columnDescription = cci("description", "description", null, null, String.class, "description", null, false,
            false, false, "keyword", 0, 0, null, null, false, null, null, null, null, null, false);

  </parent>
  <artifactId>guava-gwt</artifactId>
  <name>Guava GWT compatible libs</name>
  <description>
    Guava is a suite of core and expanded libraries that include
    utility classes, Google's collections, I/O classes, and
    much more.

    This project includes GWT-friendly sources.
  </description>
  <properties>
    <gwt.version>2.12.2</gwt.version>
    <gwt.plugin.version>2.10.0</gwt.plugin.version>

    "servers": [
        {
            "url": "/api/v1"
        },
        {
            "url": "https://stag.example.com",
            "description": "Staging environment"
        },
        {
            "url": "https://prod.example.com",
            "description": "Production environment"
        }
    ],
    "paths": {
            // Mais coisas aqui
    }
}
```

/// tip | Dica

✔️ 🤯 👈 🎏 🧰 5️⃣📆 ✔️ 🎏 🎚 🗄 🐕‍🦺.

👫 💪 🚫 🎦 🌐 ➕ ℹ 📣, 👐 🌅 💼, ❌ ⚒ ⏪ 📄 🛠️.

///

👆 💪 🚮 `title`:

{* ../../docs_src/query_params_str_validations/tutorial007.py hl[10] *}

& `description`:

{* ../../docs_src/query_params_str_validations/tutorial008.py hl[13] *}

## 📛 🔢

🌈 👈 👆 💚 🔢 `item-query`.

💖:

```
http://127.0.0.1:8000/items/?item-query=foobaritems
```

{* ../../docs_src/body_nested_models/tutorial004_py310.py hl[18] *}

This would mean that **FastAPI** would expect a body similar to:

```JSON
{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2,
    "tags": ["rock", "metal", "bar"],
    "image": {
        "url": "http://example.com/baz.jpg",
        "name": "The Foo live"
    }
}
```

{* ../../docs_src/body_nested_models/tutorial004_py310.py hl[18] *}

Это означает, что **FastAPI** будет ожидать тело запроса, аналогичное этому:

```JSON
{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2,
    "tags": ["rock", "metal", "bar"],
    "image": {
        "url": "http://example.com/baz.jpg",
        "name": "The Foo live"
    }
}
```

		return
	case errInvalidRangeSource:
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidCopyPartRangeSource), url)
		return
	default:
		apiErr := errorCodes.ToAPIErr(ErrInvalidCopyPartRangeSource)
		apiErr.Description = err.Error()
		writeErrorResponse(ctx, w, apiErr, url)
		return
	}
}

// Parses x-amz-copy-source-range for CopyObjectPart API. Its behavior
// is different from regular HTTP range header. It only supports the

	}

	cancel()
	return nil
}

//msgp:ignore batchKeyRotationJobError
type batchKeyRotationJobError struct {
	Code           string
	Description    string
	HTTPStatusCode int
}

func (e batchKeyRotationJobError) Error() string {
	return e.Description
}

// Validate validates the job definition input
func (r *BatchJobKeyRotateV1) Validate(ctx context.Context, job BatchJobRequest, o ObjectLayer) error {

    /**
     * Creates an {@link java.io.InputStream} for reading bytes from a file on
     * an SMB server addressed by the <code>url</code> parameter. See {@link
     * jcifs.smb1.smb1.SmbFile} for a detailed description and examples of the smb
     * URL syntax.
     *
     * @param url An smb URL string representing the file to read from
     */

    /**
     * Creates an input stream for reading from the specified SMB URL