):
    return {"message": "Hello World"}
```

...all these parameters are required because the default value is `...` (Ellipsis).

But now it's possible and supported to just omit the default value, as would be done with Pydantic fields, and the parameters would still be required.

✨ For example, this is now supported:

```Python
from fastapi import Cookie, FastAPI, Header, Path, Query

    ) {
      assertLockNotHeld()

      sendBuffer.write(source, byteCount)
      while (sendBuffer.size >= EMIT_BUFFER_SIZE) {
        emitFrame(false)
      }
    }

    /**
     * Emit a single data frame to the connection. The frame's size be limited by this stream's
     * write window. This method will block until the write window is nonempty.
     */
    @Throws(IOException::class)

      override fun writeTo(sink: BufferedSink) {
        val uppercase = uppercase(sink)
        val bufferedSink = uppercase.buffer()
        original!!.writeTo(bufferedSink)
        bufferedSink.emit()
      }
    }

  private fun uppercase(original: BufferedSink): Sink =
    object : ForwardingSink(original) {
      override fun write(
        source: Buffer,
        byteCount: Long,
      ) {

          "foo.ca",
          "foo.eDu.au",
          "foo.uk.com",
          "home.netscape.com",
          "pvt.k12.ca.us",
          "state.CA.us",
          "utenti.blah.IT",
          "web.MIT.edu",
          "www.google.com",
          "www.state.pa.us",
          "www4.yahoo.co.uk"
          // keep-sorted end
          );

  private static final ImmutableSet<String> NON_RS =

Bạn có thể cài đặt tất cả những dependency trên với `pip install "fastapi[all]"`.

## Giấy phép

Możesz zainstalować wszystkie te aplikacje przy pomocy `pip install fastapi[all]`.

## Licencja

תוכלו להתקין את כל אלו באמצעות <code dir="ltr">pip install "fastapi[all]"</code>.

## רשיון

Вы можете установить все это с помощью `pip install "fastapi[all]"`.

## Лицензия

Puoi installarle tutte con `pip install fastapi[all]`.

## Licenza

/*! bootstrap-timepicker v0.5.2 
* http://jdewit.github.com/bootstrap-timepicker 
* Copyright (c) 2016 Joris de Wit and bootstrap-timepicker contributors 
* MIT License