byte[] dataBytes = { 1, 2, 3, 4 };
        String params = "test";
        byte[] buffer = createBuffer(10, dataBytes, params);

        // Verify buffer structure
        assertTrue(buffer.length >= 14, "Buffer should contain header, params and data");
    }

    @Test
    public void testByteOperations() {
        // Test byte operations that were used in the original test
        byte b = (byte) 0xFF;

        // 10
        "id\r\n".encodeUtf8(),
        // 11
        "id\r".encodeUtf8(),
        // 12
        "id\n".encodeUtf8(),
        // 13
        "event: ".encodeUtf8(),
        // 14
        "event:".encodeUtf8(),
        // 15
        "event\r\n".encodeUtf8(),
        // 16
        "event\r".encodeUtf8(),
        // 17
        "event\n".encodeUtf8(),
        // 18

## Den Hintergrundtask hinzufügen

Übergeben Sie innerhalb Ihrer *Pfadoperation-Funktion* Ihre Taskfunktion mit der Methode `.add_task()` an das *Hintergrundtasks*-Objekt:

{* ../../docs_src/background_tasks/tutorial001.py hl[14] *}

`.add_task()` erhält als Argumente:

* Eine Taskfunktion, die im Hintergrund ausgeführt wird (`write_notification`).

        // Create trust info with test data
        lsarpc.LsarTrustInformation trustInfo = new lsarpc.LsarTrustInformation();
        trustInfo.name = new rpc.unicode_string();
        trustInfo.name.length = 14;
        trustInfo.name.maximum_length = 28;
        trustInfo.name.buffer = new short[] { 'T', 'R', 'U', 'S', 'T', 'E', 'D' };

        trustInfo.sid = new rpc.sid_t();
        trustInfo.sid.revision = 1;

## File Parameters with `UploadFile` { #file-parameters-with-uploadfile }

Define a file parameter with a type of `UploadFile`:

{* ../../docs_src/request_files/tutorial001_an_py39.py hl[14] *}

Using `UploadFile` has several advantages over `bytes`:

* You don't have to use `File()` in the default value of the parameter.
* It uses a "spooled" file:

## Parâmetros de Arquivo com `UploadFile`

Defina um parâmetro de arquivo com um tipo de `UploadFile`:

{* ../../docs_src/request_files/tutorial001_an_py39.py hl[14] *}

Utilizar `UploadFile` tem várias vantagens sobre `bytes`:

* Você não precisa utilizar o `File()` no valor padrão do parâmetro.
* Ele utiliza um arquivo "spooled":

        // Align to 4-byte boundary with a fill value
        ndrBuffer.setIndex(1);
        int alignedBytes = ndrBuffer.align(4, (byte) 0xFF);
        assertEquals(3, alignedBytes); // Should advance by 3 bytes (1 -> 4)
        assertEquals(4, ndrBuffer.getIndex());
        assertEquals(4, ndrBuffer.getLength()); // Length should be updated

        // Verify filled bytes
        assertEquals((byte) 0xFF, buffer[1]);

You probably won't need to use it directly in your code.

But in case you needed it for an advanced scenario, you can add custom headers:

{* ../../docs_src/handling_errors/tutorial002.py hl[14] *}

## Install custom exception handlers { #install-custom-exception-handlers }

	{dataBlocks: 6, onDisks: 12, offDisks: 0, blocksize: int64(oneMiByte), data: oneMiByte, offset: oneMiByte, length: 0, algorithm: BLAKE2b512, shouldFail: false, shouldFailQuorum: false},
	// 4
	{dataBlocks: 7, onDisks: 14, offDisks: 0, blocksize: int64(oneMiByte), data: oneMiByte, offset: 3, length: 1024, algorithm: DefaultBitrotAlgorithm, shouldFail: false, shouldFailQuorum: false},                    // 5

        configuration1.addChild(jdkHome1);
        tm1.setConfiguration(configuration1);

        ToolchainModel tm2 = new ToolchainModel();
        tm1.setType("jdk");
        tm1.addProvide("version", "1.4");
        tm1.addProvide("vendor", "sun");
        Xpp3Dom configuration2 = new Xpp3Dom("configuration");
        Xpp3Dom jdkHome2 = new Xpp3Dom("jdkHome");
        jdkHome2.setValue("${env.JAVA_HOME}");