* key iteration order.
 *
 * <p>The multimap does not store duplicate key-value pairs. Adding a new key-value pair equal to an
 * existing key-value pair has no effect.
 *
 * <p>Keys and values may be null. All optional multimap methods are supported, and all returned
 * views are modifiable.
 *
 * <p>This class is not threadsafe when any concurrent operations update the multimap. Concurrent

### Despliega tu app (opcional) { #deploy-your-app-optional }

Opcionalmente puedes desplegar tu app de FastAPI en [FastAPI Cloud](https://fastapicloud.com), ve y únete a la lista de espera si aún no lo has hecho. 🚀

### Faça o deploy da sua aplicação (opcional) { #deploy-your-app-optional }

Você pode, opcionalmente, fazer o deploy da sua aplicação FastAPI na [FastAPI Cloud](https://fastapicloud.com); acesse e entre na lista de espera, se ainda não entrou. 🚀

### Déployer votre application (optionnel) { #deploy-your-app-optional }

Vous pouvez, si vous le souhaitez, déployer votre application FastAPI sur [FastAPI Cloud](https://fastapicloud.com), allez rejoindre la liste d’attente si ce n’est pas déjà fait. 🚀

    public FileInputStream openStream() throws IOException {
      return new FileInputStream(file);
    }

    @Override
    public Optional<Long> sizeIfKnown() {
      if (file.isFile()) {
        return Optional.of(file.length());
      } else {
        return Optional.absent();
      }
    }

    @Override
    public long size() throws IOException {
      if (!file.isFile()) {

* `tags: List[str] = []` has a default of an empty list: `[]`.

but you might want to omit them from the result if they were not actually stored.

For example, if you have models with many optional attributes in a NoSQL database, but you don't want to send very long JSON responses full of default values.

### Use the `response_model_exclude_unset` parameter { #use-the-response-model-exclude-unset-parameter }

                cb.query().addOrderBy_RequestedAt_Desc();
                createSearchLogCondition(pager, cb);
            });
        }

        // update pager
        BeanUtil.copyBeanToBean(list, pager, option -> option.include(Constants.PAGER_CONVERSION_RULE));
        pager.setPageNumberList(list.pageRange(op -> {
            op.rangeSize(fessConfig.getPagingPageRangeSizeAsInteger());
        }).createPageNumberList());

    }

    /**
     * Builder class for creating XmlNode instances.
     * <p>
     * This builder provides a fluent API for setting the various properties of an XML node.
     * All properties are optional except for the node name, which must be set before calling
     * {@link #build()}.
     */
    class Builder {
        private String name;
        private String value;
        private String namespaceUri;

```

但這樣每次執行 `fastapi` 指令時都要記得傳入正確路徑。

此外，其他工具可能找不到它，例如 [VS Code 擴充套件](../editor-support.md) 或 [FastAPI Cloud](https://fastapicloud.com)，因此建議在 `pyproject.toml` 中使用 `entrypoint`。

### 部署你的應用程式（可選） { #deploy-your-app-optional }

你可以選擇將你的 FastAPI 應用程式部署到 [FastAPI Cloud](https://fastapicloud.com)，如果還沒有，去加入候補名單吧。🚀

如果你已經有 **FastAPI Cloud** 帳號（我們已從候補名單邀請你 😉），你可以用一個指令部署你的應用程式。

部署之前，先確保你已登入：

<div class="termy">

	// using `.metricPrefix()` and is added to each metric returned.
	CollectorPath collectorPath
	// List of all metric descriptors that could be returned by the loader.
	Descriptors []MetricDescriptor
	// (Optional) Extra (constant) label KV pairs to be added to each metric in
	// the group.
	ExtraLabels map[string]string

	// Loader functions to load metrics. Only one of these will be set. Metrics