* @return true if closed, false otherwise
     */
    public boolean isClosed() {
        return closed;
    }

    private void checkNotClosed() {
        if (closed) {
            throw new IllegalStateException("Authenticator has been closed");
        }
    }

    /**
     * Return the domain and username in the format:
     * <code>domain\\username</code>. This is equivalent to <code>toString()</code>.

    if (success && !entry.readable) {
      for (i in 0 until valueCount) {
        if (!editor.written!![i]) {
          editor.abort()
          throw IllegalStateException("Newly created entry didn't create value for index $i")
        }
        if (!fileSystem.exists(entry.dirtyFiles[i])) {
          editor.abort()
          return
        }
      }
    }

       * seen value. And while we *could* do that, we aren't required to: Map.Entry explicitly says
       * that behavior is undefined when the backing map is modified through another API. (It even
       * permits us to throw IllegalStateException. Maybe we should have done that, but we probably
       * shouldn't change now for fear of breaking people.)
       *
       * If the entry is still in the map, then updateIndex ensured that `index` points to the right

      return HttpUrl(
        scheme = scheme ?: throw IllegalStateException("scheme == null"),
        username = encodedUsername.percentDecode(),
        password = encodedPassword.percentDecode(),
        host = host ?: throw IllegalStateException("host == null"),
        port = effectivePort(),
        pathSegments = encodedPathSegments.map { it.percentDecode() },

   * iterator, as the {@code Iterator} contract states that a call to {@code * remove()} before a
   * call to {@code next()} will throw an {@link IllegalStateException}.
   *
   * <p><b>{@code Stream} equivalent:</b> {@link Stream#skip} (same).
   */
  public final FluentIterable<E> skip(int numberToSkip) {
    return from(Iterables.skip(getDelegate(), numberToSkip));
  }

       * seen value. And while we *could* do that, we aren't required to: Map.Entry explicitly says
       * that behavior is undefined when the backing map is modified through another API. (It even
       * permits us to throw IllegalStateException. Maybe we should have done that, but we probably
       * shouldn't change now for fear of breaking people.)
       */
      return (lastKnownIndex == -1) ? unsafeNull() : value(lastKnownIndex);
    }

   * iterator, as the {@code Iterator} contract states that a call to {@code * remove()} before a
   * call to {@code next()} will throw an {@link IllegalStateException}.
   *
   * <p><b>{@code Stream} equivalent:</b> {@link Stream#skip} (same).
   */
  public final FluentIterable<E> skip(int numberToSkip) {
    return from(Iterables.skip(getDelegate(), numberToSkip));
  }

    ImmutableMap.Builder<String, Integer> builder =
        new Builder<String, Integer>().orderEntriesByValue(Ordering.natural());
    assertThrows(
        IllegalStateException.class, () -> builder.orderEntriesByValue(Ordering.natural()));
  }

  @GwtIncompatible // we haven't implemented this
  public void testBuilder_orderEntriesByValue_keepingLast() {

          path = value
        } else if (protocol === Protocol.HTTP_2 || protocol === Protocol.H2_PRIOR_KNOWLEDGE) {
          httpHeaders.add(name, value)
        } else {
          throw IllegalStateException()
        }
        if (name == "expect" && value.equals("100-continue", ignoreCase = true)) {
          // Don't read the body unless we've invited the client to send it.
          readBody = false
        }

 *  Fix: `HttpUrl` now uses the canonical form for IPv6 addresses.
 *  Fix: Use `HttpUrl` internally.
 *  Fix: Recover from Android 4.2.2 EBADF crashes.
 *  Fix: Don't crash with an `IllegalStateException` if an HTTP/2 or SPDY
    write fails, leaving the connection in an inconsistent state.
 *  Fix: Make sure the default user agent is ASCII.


## Version 2.4.0

_2015-05-22_