* @return {@link InetAddress} representing the argument
   * @throws IllegalArgumentException if the argument is not a valid IP string literal
   */
  @CanIgnoreReturnValue // TODO(b/219820829): consider removing
  public static InetAddress forString(String ipString) {
    byte[] addr = ipStringToBytes(ipString);

    // The argument was malformed, i.e. not an IP string literal.
    if (addr == null) {

    return response;
  }

  private Object invokeMethod(String methodName, Object... arguments) throws Exception {
    return getMethod(methodName, arguments).invoke(lockLikeObject, arguments);
  }

  private Method getMethod(String methodName, Object... arguments) throws Exception {
    METHODS:
    for (Method method : lockLikeObject.getClass().getMethods()) {

        List<Object> arguments = new ArrayList<>();
        arguments.add(guard);
        if (isDurationBased(method)) {
          arguments.add(Duration.ZERO);
        }
        if (isLongTimeUnitBased(method)) {
          arguments.add(0L);
          arguments.add(TimeUnit.MILLISECONDS);
        }
        try {
          method.invoke(monitor, arguments.toArray());

        pos += lenToRead;
        return lenToRead;
      }
    }
  }

  /**
   * @param input the size of the input source
   * @param offset the first argument to {@link ByteSource#slice}
   * @param length the second argument to {@link ByteSource#slice}
   * @param expectRead the number of bytes we expect to read
   */
  private static void assertCorrectSlice(int input, int offset, long length, int expectRead)

        // If the implementation uses identityHashCode(), referential equality is
        // probably intended. So no point in using an equal-but-different factory argument.
        // We check twice to avoid confusion caused by accidental hash collision.
        equalArgs.set(i, shouldBeEqualArg);
      }
    }
    return equalArgs;
  }

    assertEquals(9, (int) numberOrdering.max(ints.iterator()));
    assertEquals(0, (int) numberOrdering.min(ints.iterator()));

    // when the values are the same, the first argument should be returned
    Integer a = new Integer(4);
    Integer b = new Integer(4);
    ints = Lists.newArrayList(a, b, b);
    assertSame(a, numberOrdering.max(ints.iterator()));

    assertEquals(9, (int) numberOrdering.max(ints.iterator()));
    assertEquals(0, (int) numberOrdering.min(ints.iterator()));

    // when the values are the same, the first argument should be returned
    Integer a = new Integer(4);
    Integer b = new Integer(4);
    ints = Lists.newArrayList(a, b, b);
    assertSame(a, numberOrdering.max(ints.iterator()));

   *     null} is treated as the four-character string {@code "null"}.
   * @param args the arguments to be substituted into the message template. The first argument
   *     specified is substituted for the first occurrence of {@code "%s"} in the template, and so
   *     forth. A {@code null} argument is converted to the four-character string {@code "null"};

   * function for most uses, but the virtualized form is needed within retryUpdate.
   *
   * @param currentValue the current value (of either base or a cell)
   * @param newValue the argument from a user update call
   * @return result of the update function
   */
  abstract long fn(long currentValue, long newValue);

  /**

public final class Functions {
  private Functions() {}

  /**
   * A function equivalent to the method reference {@code Object::toString}, for users not yet using
   * Java 8. The function simply invokes {@code toString} on its argument and returns the result. It
   * throws a {@link NullPointerException} on null input.
   *
   * <p><b>Warning:</b> The returned function may not be <i>consistent with equals</i> (as