return nil, err
	}

	var policyInfo miniogopolicy.BucketAccessPolicy
	json := jsoniter.ConfigCompatibleWithStandardLibrary
	if err = json.Unmarshal(data, &policyInfo); err != nil {
		// This should not happen because data is valid to JSON data.
		return nil, err
	}

	return &policyInfo, nil
}

    // Tests for data persistence and index lifecycle
    // ============================================================

    @Test
    public void test_dataPersistedAfterCreateIndex() throws Exception {
        Suggester suggester = createSuggester();
        suggester.createIndexIfNothing();

        // Index some data
        String[][] readings = new String[1][];

	"http://127.0.0.1:9004/tmp/multisiteb/data/disterasure/xl{5...8}" >/tmp/siteb_1.log 2>&1 &
minio server --address 127.0.0.1:9004 "http://127.0.0.1:9003/tmp/multisiteb/data/disterasure/xl{1...4}" \
	"http://127.0.0.1:9004/tmp/multisiteb/data/disterasure/xl{5...8}" >/tmp/siteb_2.log 2>&1 &

minio server --address 127.0.0.1:9005 "http://127.0.0.1:9005/tmp/multisitec/data/disterasure/xl{1...4}" \

    void testWriteBytesWireFormatWithoutData() {
        setupMockConfig();
        Smb2IoctlRequest request = new Smb2IoctlRequest(mockConfig, TEST_CONTROL_CODE, TEST_FILE_ID);
        byte[] buffer = new byte[1024];

        int written = request.writeBytesWireFormat(buffer, 0);

        // Should write exactly 56 bytes (structure size without data)
        assertEquals(56, written);

        data = "<img src=\"http://example/foo.jpg\" width=\"100\" height=\"10\">";
        assertNull(transformer.getThumbnailUrl(responseData, getDocument(data)));

        data = "<img src=\"http://example/foo.jpg\" width=\"400\" height=\"100\">";
        assertNull(transformer.getThumbnailUrl(responseData, getDocument(data)));

            final String queryId = data.getQueryId();
            final String highlightParams = data.getAppendHighlightParams();
            final boolean nextPage = data.isExistNextPage();
            final boolean prevPage = data.isExistPrevPage();
            final long startRecordNumber = data.getCurrentStartRecordNumber();
            final long endRecordNumber = data.getCurrentEndRecordNumber();

// getSHA256Hash returns SHA-256 hash in hex encoding of given data.
func getSHA256Hash(data []byte) string {
	return hex.EncodeToString(getSHA256Sum(data))
}

// getSHA256Hash returns SHA-256 sum of given data.
func getSHA256Sum(data []byte) []byte {
	hash := sha256.New()
	hash.Write(data)
	return hash.Sum(nil)
}

// getMD5Sum returns MD5 sum of given data.
func getMD5Sum(data []byte) []byte {
	hash := md5.New()
	hash.Write(data)

如果你查看 `/docs`，會看到欄位 `data` 需要 base64 編碼的位元組：

<div class="screenshot">
<img src="/img/tutorial/json-base64-bytes/image01.png">
</div>

你可以發送如下的請求：

```json
{
    "description": "Some data",
    "data": "aGVsbG8="
}
```

/// tip

`aGVsbG8=` 是 `hello` 的 base64 編碼。

///

接著 Pydantic 會將該 base64 字串解碼，並在模型的 `data` 欄位中提供原始位元組。

你會收到類似以下的回應：

```json
{

        ]
    }


@pytest.mark.parametrize(
    "path",
    ["/required-str", "/model-required-str"],
)
def test_required_str(path: str):
    client = TestClient(app)
    response = client.post(path, data={"p": "hello"})
    assert response.status_code == 200
    assert response.json() == {"p": "hello"}


# =====================================================================================
# Alias

    void testHasMoreElementsBecomeFalse() {
        // Set small amounts so everything fits in one message
        transaction.setParameterBytesWritten(10);
        transaction.setDataBytesWritten(10);

        // First call processes all data
        transaction.nextElement();

        // Should have no more elements since all data fit in first message