}

  private static final class UnknownElementException extends RuntimeException {
    private UnknownElementException(Collection<?> expected, Object actual) {
      super("Returned value '" + actual + "' not found. Remaining elements: " + expected);
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  /**

   *   pinnedRoot (trusted by CertificatePinner)
   *     -> pinnedIntermediate (trusted by CertificatePinner)
   *         -> attackerSwitch
   * ```
   *
   * The attacker serves a set of certificates that yields a too-long chain in our certificate
   * pinner. The served certificates (incorrectly) formed a single chain to the pinner:
   *
   * ```
   *   attackerCa
   *     -> attackerIntermediate

 * across the key-value mappings in the order they were added to the multimap.
 *
 * <p>The iteration ordering of the collections generated by {@code keySet}, {@code keys}, and
 * {@code asMap} has a few subtleties. As long as the set of keys remains unchanged, adding or
 * removing mappings does not affect the key iteration order. However, if you remove all values

    monitor.enterWhenUninterruptibly(hasReachedRunning);
    try {
      checkCurrentState(RUNNING);
    } finally {
      monitor.leave();
    }
  }

  @Override
  public final void awaitRunning(long timeout, TimeUnit unit) throws TimeoutException {
    if (monitor.enterWhenUninterruptibly(hasReachedRunning, timeout, unit)) {
      try {
        checkCurrentState(RUNNING);
      } finally {
        monitor.leave();

            final byte[] ntlmClientChallenge = new byte[8];
            tc.getConfig().getRandom().nextBytes(ntlmClientChallenge);

            long ts = (System.currentTimeMillis() + SmbConstants.MILLISECONDS_BETWEEN_1970_AND_1601) * 10000;
            if (haveTimestamp) {
                ts = ((AvTimestamp) AvPairs.get(avPairs, AvPair.MsvAvTimestamp)).getTimestamp();

 * {@link #createCollection()} could return a {@link java.util.TreeSet}, in which case the
 * multimap's iterators would propagate through the keys and values in sorted order.
 *
 * <p>Keys and values may be null, as long as the underlying collection classes support null
 * elements.
 *
 * <p>The collections created by {@link #createCollection()} may or may not allow duplicates. If the

**FastAPI**는 요청의 **쿼리 매개변수**에서 **각 필드**의 데이터를 **추출**해 정의한 Pydantic 모델로 제공합니다.

## 문서 확인하기

`/docs` 경로의 API 문서에서 매개변수를 확인할 수 있습니다.

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

## 추가 쿼리 매개변수 금지

몇몇의 특이한 경우에 (흔치 않지만), 허용할 쿼리 매개변수를 **제한**해야할 수 있습니다.

Pydantic 모델 설정에서 `extra` 필드를 `forbid` 로 설정할 수 있습니다.

{* ../../docs_src/query_param_models/tutorial002_an_py310.py hl[10] *}

## Check the Docs { #check-the-docs }

You can see the required headers in the docs UI at `/docs`:

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

## Forbid Extra Headers { #forbid-extra-headers }

In some special use cases (probably not very common), you might want to **restrict** the headers that you want to receive.

  /**
   * Returns an address from a <b>little-endian ordered</b> byte array (the opposite of what {@link
   * InetAddress#getByAddress} expects).
   *
   * <p>IPv4 address byte array must be 4 bytes long and IPv6 byte array must be 16 bytes long.
   *
   * @param addr the raw IP address in little-endian byte order
   * @return an InetAddress object created from the raw IP address

   *
   * @return the number of characters written
   * @throws IOException if an I/O error occurs while reading from {@code readable} or writing to
   *     this sink
   */
  @CanIgnoreReturnValue
  public long writeFrom(Readable readable) throws IOException {
    checkNotNull(readable);

    try (Writer out = openStream()) {
      return CharStreams.copy(readable, out);
    }
  }