app.include_router(internal_router)
        ```
        """
        assert self is not router, (
            "Cannot include the same APIRouter instance into itself. "
            "Did you mean to include a different router?"
        )
        if prefix:
            assert prefix.startswith("/"), "A path prefix must start with '/'"
            assert not prefix.endswith("/"), (

        "maxVizHeight": 300,
        "minVizHeight": 10,
        "minVizWidth": 0,
        "namePlacement": "auto",
        "orientation": "horizontal",
        "reduceOptions": {
          "calcs": [
            "mean"
          ],
          "fields": "",
          "values": false
        },
        "showUnfilled": false,
        "sizing": "auto",
        "text": {},
        "valueMode": "color"
      },

                    `response_model`, converting any data as necessary to generate the
                    corresponding JSON. But if the data in the object returned is not
                    valid, that would mean a violation of the contract with the client,
                    so it's an error from the API developer. So, FastAPI will raise an
                    error and return a 500 error code (Internal Server Error).

they've begun asking riddles.--I believe I can guess that,' she
added aloud.

  `Do you mean that you think you can find out the answer to it?'
said the March Hare.

  `Exactly so,' said Alice.

  `Then you should say what you mean,' the March Hare went on.

  `I do,' Alice hastily replied; `at least--at least I mean what
I say--that's the same thing, you know.'

they've begun asking riddles.--I believe I can guess that,' she
added aloud.

  `Do you mean that you think you can find out the answer to it?'
said the March Hare.

  `Exactly so,' said Alice.

  `Then you should say what you mean,' the March Hare went on.

  `I do,' Alice hastily replied; `at least--at least I mean what
I say--that's the same thing, you know.'

    assertThat(cause)
        .hasMessageThat()
        .contains(
            "AsyncFunction.apply returned null instead of a Future. "
                + "Did you mean to return immediateFuture(null)?");
  }

  @J2ktIncompatible
  @GwtIncompatible // threads
  public void testCatchingAsync_interruptPropagatesToTransformingThread() throws Exception {

    assertThat(cause)
        .hasMessageThat()
        .contains(
            "AsyncFunction.apply returned null instead of a Future. "
                + "Did you mean to return immediateFuture(null)?");
  }

  @J2ktIncompatible
  @GwtIncompatible // threads
  public void testCatchingAsync_interruptPropagatesToTransformingThread() throws Exception {

	totalRx := int64(0)
	connectTime := time.Now()
	for {
		n, err := io.CopyN(xioutil.Discard, r.Body, 128*humanize.KiByte)
		if err != nil && err != io.EOF && err != io.ErrUnexpectedEOF {
			// would mean the network is not stable. Logging here will help in debugging network issues.
			if time.Since(connectTime) < (globalNetPerfMinDuration - time.Second) {
				adminLogIf(ctx, err)
			}
		}
		totalRx += n

    /** The key of the message: {item} is an invalid {type} barcode. */
    public static final String CONSTRAINTS_EAN_MESSAGE = "{constraints.EAN.message}";

    /** The key of the message: {item} is not a valid email address. */
    public static final String CONSTRAINTS_Email_MESSAGE = "{constraints.Email.message}";

   * to the cache because we incorrectly assumed that HttpsURLConnection was always HTTPS and
   * HttpURLConnection was always HTTP; in practice redirects mean that each can do either.
   *
   * https://github.com/square/okhttp/issues/214
   */
  @Test
  fun secureResponseCachingAndProtocolRedirects() {
    server2.useHttps(handshakeCertificates.sslSocketFactory())