}

    @Override
    public void describeTo(Description description) {
        description
                .appendText("a ProjectBuildingResult with location ")
                .appendText(formatLocation(columnNumber, lineNumber));
    }

    private String formatLocation(int columnNumber, int lineNumber) {

            description.appendText("was a ProjectBuildingResult with messages ");
            String messages = r.getProblems().stream()
                    .map(ModelProblem::getMessage)
                    .map(m -> "\"" + m + "\"" + System.lineSeparator())
                    .collect(joining(", "));
            description.appendText(messages);
        }
    }

     *
     * @param text
     *            テキストノード。{@literal null}であってはいけません
     * @param buf
     *            文字列バッファ。{@literal null}であってはいけません
     */
    public static void appendText(final Text text, final StringBuilder buf) {
        assertArgumentNotNull("text", text);
        assertArgumentNotNull("buf", buf);

        buf.append(encodeText(text.getData()));
    }

    /**

        final StringBuilder buf = new StringBuilder(BASE.length() * 2);
        buf.append(BASE);
        final int lowTime = (int) (System.currentTimeMillis() >> 32);
        StringUtil.appendHex(buf, lowTime);
        StringUtil.appendHex(buf, RANDOM.nextInt());
        return buf.toString();
    }

    private static byte[] getAddress() {
        try {
            return InetAddress.getLocalHost().getAddress();

        for (final byte b : bytes) {
            appendHex(sb, b);
        }
        return new String(sb);
    }

    /**
     * {@literal int}の値を16進数の文字列に変換します。
     *
     * @param i
     *            {@literal int}の値
     * @return 16進数の文字列
     */
    public static String toHex(final int i) {
        final StringBuilder buf = new StringBuilder();
        appendHex(buf, i);
        return new String(buf);

    }

    /**
     * @throws Exception
     */
    @Test
    public void testAppendHex() throws Exception {
        final StringBuilder buf = new StringBuilder();
        StringUtil.appendHex(buf, (byte) 1);
        assertEquals("01", buf.toString());
    }

    /**
     * @throws Exception
     */
    @Test
    public void testCamelize() throws Exception {