assertArgumentNotNull("children", children);
        assertArgumentNotNull("buf", buf);

        final int length = children.getLength();
        for (int i = 0; i < length; ++i) {
            appendNode(children.item(i), buf);
        }
    }

    /**
     * {@link NamedNodeMap}の文字列表現を追加します。
     *
     * @param attrs

     * @return escaped string.
     */
    public static String escape(final String value) {
        if (value == null) {
            return null;
        }

        char c;
        final int len = value.length();
        final StringBuilder buf = new StringBuilder(len * 2);

        for (int i = 0; i < len; i++) {
            c = value.charAt(i);
            switch (c) {
            case '\\':
            case '"':

     *            パターン文字列
     * @return 区切り文字を含まないプレーンなパターン文字列
     */
    protected static String toPlainPattern(final String pattern) {
        final StringBuilder buf = new StringBuilder(pattern.length());
        for (int i = 0; i < pattern.length(); ++i) {
            final char ch = pattern.charAt(i);
            if (Character.isLetterOrDigit(ch) || Character.isWhitespace(ch)) {
                buf.append(ch);
            }
        }

                public char charAt(final int index) {
                    return name.charAt(index);
                }

                @Override
                public int length() {
                    return name.length();
                }

                @Override
                public CharSequence subSequence(final int start, final int end) {
                    return name.subSequence(start, end);

     */
    public ArrayIterator(final T... items) {
        this.items = items;
    }

    @Override
    public boolean hasNext() {
        return index < items.length;
    }

    @Override
    public T next() {
        try {
            final T o = items[index];
            index++;
            return o;
        } catch (final IndexOutOfBoundsException e) {

        assertEquals("1", 2, array.length);
        assertEquals("2", "aaa", array[0]);
        assertEquals("3", "bbb", array[1]);
    }

    /**
     *
     */
    @Test
    public void testSplit2() {
        final String[] array = StringUtil.split("aaa, bbb", ", ");
        assertEquals("1", 2, array.length);
        assertEquals("2", "aaa", array[0]);

        }
        final Type[] genericParameter = getGenericParameters(type);
        if (genericParameter == null) {
            return null;
        }
        assertArgumentArrayIndex("index", index, genericParameter.length);
        return genericParameter[index];
    }

    /**
     * パラメータ化された型を要素とする配列の要素型を返します。
     * <p>
     * <code>type</code>がパラメータ化された型の配列でない場合は<code>null</code>を返します。
     * </p>
     *

        assertArgumentNotEmpty("path", path);

        File dir = null;
        final URL url = getResource(path);
        if ("file".equals(url.getProtocol())) {
            final int num = path.split("/").length;
            dir = new File(getFileName(url));
            for (int i = 0; i < num; ++i) {
                dir = dir.getParentFile();
            }
        } else {