appendHex(buf, i);
        return new String(buf);
    }

    /**
     * Appends the hexadecimal string representation of a number to the given StringBuilder.
     *
     * @param buf
     *            the StringBuilder to append to
     * @param i
     *            the number to convert
     */
    public static void appendHex(final StringBuilder buf, final byte i) {

    }

    /**
     * @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 {

    }

    @Test
    public void test_append_multipleEvents() {
        appender.append(createLogEvent(Level.ERROR, "org.codelibs.fess.a", "error 1"));
        appender.append(createLogEvent(Level.ERROR, "org.codelibs.fess.b", "error 2"));
        appender.append(createLogEvent(Level.ERROR, "org.codelibs.fess.c", "error 3"));

    }

    /**
     * Returns a new array with the specified object appended to the end.
     *
     * @param <T>
     *            the type of the array elements
     * @param array
     *            the array. Must not be {@literal null}
     * @param obj
     *            the object to add
     * @return a new array with the object appended
     */
    public static <T> T[] add(final T[] array, final T obj) {

          description.appendText(platform)
        }

        override fun matches(item: Any?): Boolean = getPlatformSystemProperty() == platform
      }

    fun fromMajor(version: Int): Matcher<PlatformVersion> =
      object : TypeSafeMatcher<PlatformVersion>() {
        override fun describeTo(description: Description) {
          description.appendText("JDK with version from $version")
        }

    }

    /**
     * Gets the additional query string that is appended to all search queries.
     *
     * @return the additionalQuery
     */
    public String getAdditionalQuery() {
        return additionalQuery;
    }

    /**
     * Sets the additional query string that is appended to all search queries.
     *
     * @param additionalQuery the additionalQuery to set
     */

      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the

      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the

     *
     * @param text
     *            The text node. Must not be {@literal null}.
     * @param buf
     *            The string buffer. Must not be {@literal null}.
     */
    public static void appendText(final Text text, final StringBuilder buf) {
        assertArgumentNotNull("text", text);
        assertArgumentNotNull("buf", buf);

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

    /**

      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or Object
      form, that is based on (or derived from) the Work and for which the