Vous pouvez donc l'utilisez comme tel :

```Python hl_lines="6"
{!../../docs_src/path_params/tutorial004.py!}
```

/// tip | "Astuce"

Vous pourriez avoir besoin que le paramètre contienne `/home/johndoe/myfile.txt`, avec un slash au début (`/`).

Dans ce cas, l'URL serait : `/files//home/johndoe/myfile.txt`, avec un double slash (`//`) entre `files` et `home`.

///

## Récapitulatif

import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Utilities for treating interruptible operations as uninterruptible. In all cases, if a thread is
 * interrupted during such a call, the call continues to block until the result is available or the
 * timeout elapses, and only then re-interrupts the thread.
 *
 * @author Anthony Zana
 * @since 10.0
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault

Perceba que aqui estamos utilizando o `open()` da biblioteca padrão que não suporta `async` e `await`, e declaramos a operação de rota com o `def` básico.

///

### `FileResponse`

Envia um arquivo  de forma assíncrona e contínua (stream).
*
Recebe um conjunto de argumentos do construtor diferente dos outros tipos de resposta:

* `path` - O caminho do arquivo que será transmitido

// immediately stops the scanning.
//
// Otherwise, the [Scanner] advances the input. If the token is not nil,
// the [Scanner] returns it to the user. If the token is nil, the
// Scanner reads more data and continues scanning; if there is no more
// data--if atEOF was true--the [Scanner] returns. If the data does not
// yet hold a complete token, for instance if it has no newline while

// the usual way, and then F returns to its caller. To the caller G, the
// invocation of F then behaves like a call to panic, terminating G's
// execution and running any deferred functions. This continues until all
// functions in the executing goroutine have stopped, in reverse order. At
// that point, the program is terminated with a non-zero exit code. This

   * not their targets (subject to the caveat below).
   *
   * <p>If an I/O exception occurs attempting to read, open or delete any file under the given
   * directory, this method skips that file and continues. All such exceptions are collected and,
   * after attempting to delete all files, an {@code IOException} is thrown containing those
   * exceptions as {@linkplain Throwable#getSuppressed() suppressed exceptions}.
   *

   * not their targets (subject to the caveat below).
   *
   * <p>If an I/O exception occurs attempting to read, open or delete any file under the given
   * directory, this method skips that file and continues. All such exceptions are collected and,
   * after attempting to delete all files, an {@code IOException} is thrown containing those
   * exceptions as {@linkplain Throwable#getSuppressed() suppressed exceptions}.
   *

constraints.Range.message                   = {item} doit être compris entre {min} et {max}.
constraints.SafeHtml.message                = {item} peut avoir un contenu html non sécurisé.
constraints.ScriptAssert.message            = l'expression de script "{script}" n'a pas été évaluée comme vraie.
constraints.URL.message                     = {item} doit être une URL valide.

// Available returns how many bytes are unused in the buffer.
func (b *Buffer) Available() int { return cap(b.buf) - len(b.buf) }

// Truncate discards all but the first n unread bytes from the buffer
// but continues to use the same allocated storage.
// It panics if n is negative or greater than the length of the buffer.
func (b *Buffer) Truncate(n int) {
	if n == 0 {
		b.Reset()
		return
	}
	b.lastRead = opInvalid

`"--found it advisable to go with Edgar Atheling to meet William
and offer him the crown.  William's conduct at first was
moderate.  But the insolence of his Normans--"  How are you
getting on now, my dear?' it continued, turning to Alice as it
spoke.

  `As wet as ever,' said Alice in a melancholy tone:  `it doesn't
seem to dry me at all.'

  `In that case,' said the Dodo solemnly, rising to its feet, `I