* inverse operation to {@link #encode(byte[])}.
   *
   * @throws IllegalArgumentException if the input is not a valid encoded string according to this
   *     encoding.
   */
  public final byte[] decode(CharSequence chars) {
    try {
      return decodeChecked(chars);
    } catch (DecodingException badInput) {
      throw new IllegalArgumentException(badInput);
    }
  }

  /**

   * anywhere else
   */

  public void testInitialCapacity_negative() {
    MapMaker maker = new MapMaker();
    assertThrows(IllegalArgumentException.class, () -> maker.initialCapacity(-1));
  }

  // TODO(cpovirk): enable when ready (apparently after a change to our GWT emulation)
  public void xtestInitialCapacity_setTwice() {

      V value = values.next();
      builder.put(keyFunction.apply(value), value);
    }
    try {
      return builder.buildOrThrow();
    } catch (IllegalArgumentException duplicateKeys) {
      throw new IllegalArgumentException(
          duplicateKeys.getMessage()
              + ". To index multiple values under a key, use Multimaps.index.");
    }
  }

  /**

   * avoids the need for expensive resizing operations later, but setting this value unnecessarily
   * high wastes memory.
   *
   * @return this {@code CacheBuilder} instance (for chaining)
   * @throws IllegalArgumentException if {@code initialCapacity} is negative
   * @throws IllegalStateException if an initial capacity was already set
   */
  @CanIgnoreReturnValue
  public CacheBuilder<K, V> initialCapacity(int initialCapacity) {

        super(domain, username, (String) null, AuthenticationType.USER);
        if (passwordHash == null || passwordHash.length != 16) {
            throw new IllegalArgumentException("Password hash must be provided, expected length 16 byte");
        }
        this.ntHash = passwordHash;
    }

    /**
     * Create username/password credentials with specified domain
     *

                if (equal(orderedEntries.get(i).getValue(), value)) {
                  return i;
                }
              }
              throw new IllegalArgumentException(
                  "Map.values generator can order only sample values");
            }
          });
      return insertionOrder;
    }

    @Override

                break;
            case "one_4m_field":
                sourceBytes = buildBigExample("huge".repeat(1024 * 1024));
                break;
            default:
                throw new IllegalArgumentException("Unknown source [" + source + "]");
        }
        fetchContext = new FetchSourceContext(
            true,
            Strings.splitStringByCommaToArray(includes),

   * anywhere else
   */

  public void testInitialCapacity_negative() {
    MapMaker maker = new MapMaker();
    assertThrows(IllegalArgumentException.class, () -> maker.initialCapacity(-1));
  }

  // TODO(cpovirk): enable when ready (apparently after a change to our GWT emulation)
  public void xtestInitialCapacity_setTwice() {

    /* Map must have at least one entry if not an EnumBiMap. */
    assertThrows(
        IllegalArgumentException.class,
        () -> EnumBiMap.create(Collections.<Currency, Country>emptyMap()));
    assertThrows(
        IllegalArgumentException.class,
        () -> EnumBiMap.create(EnumHashBiMap.<Currency, Country>create(Currency.class)));

    /* Map can be empty if it's an EnumBiMap. */

    assertThat(runnable.toString()).isEqualTo("x");
  }

  public void testNewProxyCantWorkOnAClass() throws Exception {
    assertThrows(
        IllegalArgumentException.class, () -> Reflection.newProxy(Object.class, X_RETURNER));
  }

  private static final InvocationHandler X_RETURNER =
      new InvocationHandler() {
        @Override