}

    /**
     * Converts to {@link Double}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string
     * @return The converted {@link Double}
     */
    public static Double toDouble(final Object o, final String pattern) {
        if (o == null) {
            return null;
        } else if (o instanceof Double) {
            return (Double) o;

        // Pattern uses Object (identity) equality, so we have to reach
        // inside to compare individual fields.
        return Objects.equals(pattern.pattern(), that.pattern.pattern())
            && pattern.flags() == that.pattern.flags();
      }
      return false;
    }

    @Override
    public String toString() {
      String patternString =

    }

    /**
     * Converts to {@link Byte}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string
     * @return The converted {@link Byte}
     */
    public static Byte toByte(final Object o, final String pattern) {
        if (o == null) {
            return null;
        } else if (o instanceof Byte) {
            return (Byte) o;

    // Path traversal patterns
    private static final Pattern TRAVERSAL_PATTERN = Pattern.compile("\\.\\.[\\\\/]|[\\\\/]\\.\\.");
    private static final Pattern DOUBLE_DOT_PATTERN = Pattern.compile("\\.\\.");
    private static final Pattern ENCODED_TRAVERSAL = Pattern.compile("%2e%2e|%252e%252e", Pattern.CASE_INSENSITIVE);
    private static final Pattern UNICODE_TRAVERSAL = Pattern.compile("\\\\u002e\\\\u002e|\\\\u002E\\\\u002E", Pattern.CASE_INSENSITIVE);

   *     example, {@code "rpc-pool-%d"} will generate thread names like {@code "rpc-pool-0"}, {@code
   *     "rpc-pool-1"}, {@code "rpc-pool-2"}, etc.
   * @return this for the builder pattern
   */
  @CanIgnoreReturnValue
  public ThreadFactoryBuilder setNameFormat(String nameFormat) {
    String unused = format(nameFormat, 0); // fail fast if the format is bad or null
    this.nameFormat = nameFormat;

        .containsExactly("Testing", "rocks", "Debugging", "sucks")
        .inOrder();
  }

  @GwtIncompatible // java.util.regex.Pattern
  private static Pattern literalDotPattern() {
    return Pattern.compile("\\.");
  }

  @GwtIncompatible // java.util.regex.Pattern
  public void testPatternSplitWithDoubleDelimiterOmitEmptyStrings() {
    String doubled = "a..b.c";

    /**
     * The pattern for numbers.
     */
    protected String pattern;

    /**
     * Constructs an instance.
     *
     * @param pattern
     *            the pattern for numbers
     */
    public NumberConverter(final String pattern) {
        assertArgumentNotEmpty("pattern", pattern);
        this.pattern = pattern;
    }

    @Override

    /**
     * The pattern for the date and time.
     */
    protected String pattern;

    /**
     * Constructs an instance.
     *
     * @param pattern
     *            the pattern for date and time
     */
    public TimestampConverter(final String pattern) {
        assertArgumentNotEmpty("pattern", pattern);
        this.pattern = pattern;
    }

    @Override

        try {
            final String pattern = getPattern(messageCode);
            if (pattern != null) {
                return MessageFormat.format(pattern, args);
            }
            return getNoPatternMessage(args);
        } catch (final Throwable ignore) {
            return getNoPatternMessage(args);
        }
    }

    /**
     * Returns the pattern string corresponding to the message code.
     *

    init {
      require(
        (pattern.startsWith("*.") && pattern.indexOf("*", 1) == -1) ||
          (pattern.startsWith("**.") && pattern.indexOf("*", 2) == -1) ||
          pattern.indexOf("*") == -1,
      ) {
        "Unexpected pattern: $pattern"
      }

      this.pattern =
        pattern.toCanonicalHost() ?: throw IllegalArgumentException("Invalid pattern: $pattern")

      when {