}

	var body bytes.Buffer
	writer := multipart.NewWriter(&body)
	part, e := writer.CreateFormFile("file", filename)
	if e != nil {
		return "", e
	}

	if _, e = part.Write(payload); e != nil {
		return "", e
	}
	writer.Close()

	r, e := http.NewRequest(http.MethodPost, reqURL, &body)
	if e != nil {
		return "", e
	}

    /** Unique identifier for the related query entry */
    @Required
    @Size(max = 1000)
    public String id;

    /** Username of the user who last updated this entry */
    @Size(max = 1000)
    public String updatedBy;

    /** Timestamp when this entry was last updated */
    @ValidateTypeFailure
    public Long updatedTime;

    /** Version number for optimistic locking */
    @Required
    @ValidateTypeFailure

class CoreUtils {

    public static <T> T cast(Class<T> clazz, Object o, String name) {
        if (!clazz.isInstance(o)) {
            if (o == null) {
                throw new IllegalArgumentException(name + " is null");
            }
            throw new IllegalArgumentException(name + " is not an instance of " + clazz.getName());
        }
        return clazz.cast(o);
    }

```console
$ python -m pip install --upgrade pip

---> 100%
```

</div>

/// tip | Consejo

A veces, podrías obtener un error **`No module named pip`** al intentar actualizar pip.

Si esto pasa, instala y actualiza pip usando el siguiente comando:

<div class="termy">

```console
$ python -m ensurepip --upgrade

---> 100%
```

</div>

`data` und `raw_data` schließen sich gegenseitig aus. Sie können pro `ServerSentEvent` nur eines von beiden setzen.

///

## Mit `Last-Event-ID` fortsetzen { #resuming-with-last-event-id }

Wenn ein Browser nach einem Verbindungsabbruch erneut verbindet, sendet er die zuletzt empfangene `id` im Header `Last-Event-ID`.

Sie können ihn als Header-Parameter einlesen und verwenden, um den Stream dort fortzusetzen, wo der Client aufgehört hat:

/// note | Nota

`data` e `raw_data` são mutuamente exclusivos. Você só pode definir um deles em cada `ServerSentEvent`.

///

## Retomando com `Last-Event-ID` { #resuming-with-last-event-id }

Quando um navegador se reconecta após uma queda na conexão, ele envia o último `id` recebido no cabeçalho `Last-Event-ID`.

Você pode lê-lo como um parâmetro de cabeçalho e usá-lo para retomar o stream de onde o cliente parou:

      def splitJobName = jobName.split('/')
      if (splitJobName.length > 1 && splitJobName.last() ==~ /^([a-zA-Z0-9_\-]+=[a-zA-Z0-9_\-&\.]+,?)+$/) {
        def baseJobName = splitJobName.dropRight(1).join('/')
        tag baseJobName
        tag splitJobName.last()
        value 'Job Name', baseJobName
        def matrixParams = splitJobName.last().split(',')
        matrixParams.collect { it.split('=') }.each { param ->

                setSessionSetup(response);

                // Initialize multi-channel after successful session setup
                initializeMultiChannel();

                // Initialize witness support for fast failover
                initializeWitnessSupport();

                if (ex != null) {
                    throw ex;
                }

        this.next = n;
        return true;
    }

    /**
     * Gets the next message in the compound chain.
     *
     * @return the next message or null if this is the last message
     */
    protected ServerMessageBlock2 getNext() {
        return this.next;
    }

    /**
     * Sets the next message in the compound chain.
     *
     * @param n the next message

      private @Nullable Entry<E> last;

      @Override
      protected Iterator<Entry<E>> delegate() {
        return readOnlyIterator;
      }

      @Override
      public Entry<E> next() {
        last = super.next();
        return last;
      }

      @Override
      public void remove() {
        checkState(last != null, "no calls to next() since the last call to remove()");