cuenta que los headers propietarios personalizados se pueden agregar [usando el prefijo `X-`](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers).

Pero si tienes headers personalizados que quieres que un cliente en un navegador pueda ver, necesitas agregarlos a tus configuraciones de CORS (leer más en [CORS (Cross-Origin Resource Sharing)](../tutorial/cors.md)), usando el parámetro `expose_headers` documentado en [la documentación CORS de Starlette](https://www.starlette.dev/middle...

O **FastAPI** **extrairá** os dados para **cada campo** dos **parâmetros de consulta** presentes na requisição, e fornecerá o modelo Pydantic que você definiu.

## Verifique a Documentação { #check-the-docs }

Você pode ver os parâmetros de consulta na IU da documentação em `/docs`:

<div class="screenshot">
<img src="/img/tutorial/query-param-models/image01.png">
</div>

   * java.util.NoSuchElementException NoSuchElementException}.
   *
   * @throws IllegalStateException if the instance is absent ({@link #isPresent} returns {@code
   *     false}); depending on this <i>specific</i> exception type (over the more general {@link
   *     RuntimeException}) is discouraged
   */
  public abstract T get();

  /**
   * Returns the contained instance if it is present; {@code defaultValue} otherwise. If no default

            if (pos != -1) {
                buf.replace(pos, pos + 1, "ss");
            }
        }
        return new String(buf);
    }

    /**
     * An {@link Iterator} that iterates over {@link DateFormat} instances corresponding to the styles supported by the locale.
     *
     * @author koichik
     */
    protected static class DateFormatIterator implements Iterator<DateFormat> {

            if (pos != -1) {
                buf.replace(pos, pos + 1, "ss");
            }
        }
        return new String(buf);
    }

    /**
     * An {@link Iterator} that iterates over {@link DateFormat} instances corresponding to the styles supported by the locale.
     *
     * @author koichik
     */
    protected static class DateFormatIterator implements Iterator<DateFormat> {

    Client->>Proxy: HTTPS Request<br/>Host: mysuperapp.com<br/>Path: /items

    Note over Proxy: Proxy adds forwarded headers

    Proxy->>Server: HTTP Request<br/>X-Forwarded-For: [client IP]<br/>X-Forwarded-Proto: https<br/>X-Forwarded-Host: mysuperapp.com<br/>Path: /items

    Note over Server: Server interprets headers<br/>(if --forwarded-allow-ips is set)

    Client->>Proxy: HTTPS Request<br/>Host: mysuperapp.com<br/>Path: /items

    Note over Proxy: Proxy adds forwarded headers

    Proxy->>Server: HTTP Request<br/>X-Forwarded-For: [client IP]<br/>X-Forwarded-Proto: https<br/>X-Forwarded-Host: mysuperapp.com<br/>Path: /items

    Note over Server: Server interprets headers<br/>(if --forwarded-allow-ips is set)

import jcifs.internal.smb1.ServerMessageBlock;
import jcifs.internal.util.SMBUtil;
import jcifs.util.Hexdump;

/**
 * SMB1 Open AndX request message.
 *
 * This command is used to open or create a file for access over
 * the network with enhanced capabilities compared to the basic Open command.
 */
public class SmbComOpenAndX extends AndXServerMessageBlock {

    // flags (not the same as flags constructor argument)

     * @return an iterator over the child resources
     * @throws CIFSException if an error occurs accessing the resource
     */
    CloseableIterator<SmbResource> children(String wildcard) throws CIFSException;

    /**
     * Fetch children matching the given filter.
     *
     * @param filter
     *            filter acting on file names
     * @return an iterator over the child resources

 * Generally speaking, this class reduces object allocation and memory consumption at the price of
 * moderately increased constant factors of CPU. Only use this class when there is a specific reason
 * to prioritize memory over CPU.
 *
 * @author Louis Wasserman
 * @author Jon Noack
 */
@GwtIncompatible // not worth using in GWT for now
class CompactHashMap<K extends @Nullable Object, V extends @Nullable Object>