Wenn Sie aber im Browser <a href="http://127.0.0.1:8000/items/foo" class="external-link" target="_blank">http://127.0.0.1:8000/items/foo</a> besuchen, erhalten Sie eine hübsche HTTP-Fehlermeldung:

```JSON
{
  "detail": [
    {
      "type": "int_parsing",
      "loc": [
        "path",
        "item_id"
      ],
      "msg": "Input should be a valid integer, unable to parse string as an integer",
      "input": "foo"
    }

      val box = Buffer()
      box.write(buffer, 1)
      result.write(box.copy(), 1)
    }
    return result
  }

  tailrec fun File.isDescendentOf(directory: File): Boolean {
    val parentFile = parentFile ?: return false
    if (parentFile == directory) return true
    return parentFile.isDescendentOf(directory)
  }

  /**
   * See FinalizationTester for discussion on how to best trigger GC in tests.

  Cut<C> lowerBound() {
    return lowerBound;
  }

  Cut<C> upperBound() {
    return upperBound;
  }

  Object readResolve() {
    if (this.equals(ALL)) {
      return all();
    } else {
      return this;
    }
  }

  @SuppressWarnings("unchecked") // this method may throw CCE
  static int compareOrThrow(Comparable left, Comparable right) {
    return left.compareTo(right);
  }

	case errDiskFull.Error():
		return errDiskFull
	case errVolumeNotFound.Error():
		return errVolumeNotFound
	case errVolumeExists.Error():
		return errVolumeExists
	case errFileNotFound.Error():
		return errFileNotFound
	case errFileVersionNotFound.Error():
		return errFileVersionNotFound
	case errFileNameTooLong.Error():
		return errFileNameTooLong
	case errFileAccessDenied.Error():
		return errFileAccessDenied

///

## 데이터 검증

하지만 브라우저에서 <a href="http://127.0.0.1:8000/items/foo" class="external-link" target="_blank">http://127.0.0.1:8000/items/foo</a>로 이동하면, HTTP 오류가 잘 뜨는 것을 확인할 수 있습니다:

```JSON
{
    "detail": [
        {
            "loc": [
                "path",
                "item_id"
            ],
            "msg": "value is not a valid integer",
            "type": "type_error.integer"
        }
    ]

    val left =
      when {
        this === NONE -> return other
        this is AggregateEventListener -> this.eventListeners
        else -> arrayOf(this)
      }
    val right =
      when {
        other === NONE -> return this
        other is AggregateEventListener -> other.eventListeners
        else -> arrayOf(other)
      }

    return AggregateEventListener(left + right)
  }

  @SuppressWarnings("unchecked")
  public static <K, V> ImmutableBiMap<K, V> of() {
    return (ImmutableBiMap<K, V>) RegularImmutableBiMap.EMPTY;
  }

  /** Returns an immutable bimap containing a single entry. */
  public static <K, V> ImmutableBiMap<K, V> of(K k1, V v1) {
    checkEntryNotNull(k1, v1);
    return new RegularImmutableBiMap<>(new Object[] {k1, v1}, 1);
  }

  /**

      public int size() {
        return max(0, data.size() + delta);
      }

      @Override
      public T get(int index) {
        return data.get(index);
      }

      @Override
      public T set(int index, T element) {
        return data.set(index, element);
      }

      @Override
      public boolean add(T element) {
        return data.add(element);
      }

      @Override

 * <ul>
 *   <li>{@link #SuggestSettingsException(String)}: Constructs a new exception with the specified detail message.</li>
 *   <li>{@link #SuggestSettingsException(Throwable)}: Constructs a new exception with the specified cause.</li>
 *   <li>{@link #SuggestSettingsException(String, Throwable)}: Constructs a new exception with the specified detail message and cause.</li>
 * </ul>
 *
 * @see RuntimeException
 */

     * Constructs a new SsoLoginException with the specified detail message.
     *
     * @param message The detail message explaining the SSO login failure
     */
    public SsoLoginException(final String message) {
        super(message);
    }

    /**
     * Constructs a new SsoLoginException with the specified detail message and cause.
     *
     * @param message The detail message explaining the SSO login failure