Usando apenas `BackgroundTasks` (e não `BackgroundTask`), é então possível usá-la como um parâmetro de _função de operação de caminho_ e deixar o **FastAPI** cuidar do resto para você, assim como ao usar o objeto `Request` diretamente.

Ainda é possível usar `BackgroundTask` sozinho no FastAPI, mas você deve criar o objeto em seu código e retornar uma Starlette `Response` incluindo-o.

O middleware responde a dois tipos específicos de solicitação HTTP...

### Requisições CORS pré-voo (preflight)

Estas são quaisquer solicitações `OPTIONS` com cabeçalhos `Origin` e `Access-Control-Request-Method`.

Nesse caso, o middleware interceptará a solicitação recebida e responderá com cabeçalhos CORS apropriados e uma resposta `200` ou `400` para fins informativos.

### Requisições Simples

All the same process that applied for path parameters also applies for query parameters:

* Editor support (obviously)
* Data <abbr title="converting the string that comes from an HTTP request into Python data">"parsing"</abbr>
* Data validation
* Automatic documentation

## Defaults

As query parameters are not a fixed part of a path, they can be optional and can have default values.

 * 
 * 2) IP Address, NetBIOS name, nodeType, groupName - If however a
 * legal NetBIOS name string is used a name query request will retreive
 * the IP, node type, and whether or not this NbtAddress represents a
 * group name. This degree of state can be obtained with a Name Query
 * Request or Node Status Request.
 * 
 * 3) All - The NbtAddress will be populated with all state such as mac

     */
    int getBufferCacheSize ();


    /**
     * 
     * Property <tt>jcifs.smb.client.listCount</tt> (int, default 200)
     * 
     * @return maxmimum number of elements to request in a list request
     */
    int getListCount ();


    /**
     * 
     * Property <tt>jcifs.smb.client.listSize</tt> (int, default 65435)
     * 

                                        </table>
                                    </div>
                                </div>
                                <c:set var="pager" value="${keyMatchPager}" scope="request"/>
                                <c:import url="/WEB-INF/view/common/admin/crud/pagination.jsp"/>
                                <c:if test="${pager.currentPageNumber > pager.allPageCount}">

                                    </div>
                                </div>
                                <c:set var="pager" value="${relatedContentPager}"
                                       scope="request"/>
                                <c:import url="/WEB-INF/view/common/admin/crud/pagination.jsp"/>
                                <c:if test="${pager.currentPageNumber > pager.allPageCount}">

name: Feature Enhancement Request
description: I want to make an existing feature better
labels: ["type=enhancement"]
body:
  - type: markdown
    attributes:
      value: >
        Filing feature requests is one of the most popular ways to contribute to Guava.


        Be aware, though: most feature requests are not accepted, even if they're suggested by
        a full-time Guava team member. [Feedback](https://stackoverflow.com/a/4543114) from our

                """
            ),
        ] = None,
    ) -> None:
        super().__init__(code=code, reason=reason)


RequestErrorModel: Type[BaseModel] = create_model("Request")
WebSocketErrorModel: Type[BaseModel] = create_model("WebSocket")


class FastAPIError(RuntimeError):
    """
    A generic, FastAPI-specific error.
    """

    private File userToolchainsFile;

    private File installationToolchainsFile;

    // ----------------------------------------------------------------------------
    // Request
    // ----------------------------------------------------------------------------

    private File multiModuleProjectDirectory;

    private File basedir;

    private Path rootDirectory;