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) {

        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();

    }

    /**
     * @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"));

import java.util.Set;

import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.core.Appender;
import org.apache.logging.log4j.core.Core;
import org.apache.logging.log4j.core.Filter;
import org.apache.logging.log4j.core.Layout;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.appender.AbstractAppender;
import org.apache.logging.log4j.core.config.Property;

log4j.rootLogger=WARN,STDOUT
log4j.appender.STDOUT=org.apache.log4j.ConsoleAppender
log4j.appender.STDOUT.ImmediateFlush=true
log4j.appender.STDOUT.layout=org.apache.log4j.PatternLayout
log4j.appender.STDOUT.layout.ConversionPattern=%-5p %d [%t] %m%n

    }

    /**
     * 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
     */

      "xn--a.ß",
      "xn--a.xn--zca",
      "xn--a-yoc",
      // OkHttp doesn't reject U+FFFD encoded in Punycode.
      "xn--zn7c.com",
      // OkHttp doesn't reject a U+200D. https://www.rfc-editor.org/rfc/rfc5892.html#appendix-A.2
      "xn--1ug.example",
      // OkHttp doesn't implement CheckJoiners.
      "\u200D.example",
      // OkHttp doesn't implement CheckBidi.
      "يa",
    )

  @Test
  fun test() {