assertEquals("test & test & test", htmlEscaper().escape("test & test & test"));
    assertEquals("test &lt;&lt; 1", htmlEscaper().escape("test << 1"));
    assertEquals("test &gt;&gt; 1", htmlEscaper().escape("test >> 1"));
    assertEquals("&lt;tab&gt;", htmlEscaper().escape("<tab>"));

    // Test simple escape of '&'.
    assertEquals("foo&amp;bar", htmlEscaper().escape("foo&bar"));

    assertEquals("test & test & test", htmlEscaper().escape("test & test & test"));
    assertEquals("test &lt;&lt; 1", htmlEscaper().escape("test << 1"));
    assertEquals("test &gt;&gt; 1", htmlEscaper().escape("test >> 1"));
    assertEquals("&lt;tab&gt;", htmlEscaper().escape("<tab>"));

    // Test simple escape of '&'.
    assertEquals("foo&amp;bar", htmlEscaper().escape("foo&bar"));

 * ---------------------------------------------
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 * 
 * MAC Address = 00-B0-34-21-FA-3B
 * </pre>
 * 

    assertEquals("xxx", xmlEscaper.escape("xxx"));
    assertEquals("test & test & test", xmlEscaper.escape("test & test & test"));
    assertEquals("test &lt;&lt; 1", xmlEscaper.escape("test << 1"));
    assertEquals("test &gt;&gt; 1", xmlEscaper.escape("test >> 1"));
    assertEquals("&lt;tab&gt;", xmlEscaper.escape("<tab>"));

    // Test all non-escaped ASCII characters.
    String s =
        "!@#$%^*()_+=-/?\\|]}[{,.;:"

/**
 * インデックス付きの{@link Iterator}です。インデックスは{@literal 0}から始まります。
 *
 * <p>
 * 次のように使います．
 * </p>
 *
 * <pre>
 * import static org.codelibs.core.collection.IndexedIterator.*;
 *
 * List&lt;String&gt; list = ...;
 * for (Indexed&lt;String%gt; indexed : indexed(list)) {
 *     System.out.println(indexed.getIndex());
 *     System.out.println(indexed.getElement());
 * }
 * </pre>
 *
 * <pre>

     * configurations, as in the case where you want to use the artifact's final name as a parameter. In this case, you
     * want the user to modify <code>&lt;build&gt;&lt;finalName/&gt;&lt;/build&gt;</code> rather than specifying a value
     * for finalName directly in the plugin configuration section. It is also useful to ensure that - for example - a

 * ---------------------------------------------
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 * 
 * MAC Address = 00-B0-34-21-FA-3B
 * </pre>
 * 

     * <blockquote>
     * 
     * <pre>
     * Exception MalformedURLException: unknown protocol: smb
     *     at java.net.URL.&lt;init&gt;(URL.java:480)
     *     at java.net.URL.&lt;init&gt;(URL.java:376)
     *     at java.net.URL.&lt;init&gt;(URL.java:330)
     *     at jcifs.smb.SmbFile.&lt;init&gt;(SmbFile.java:355)
     *     ...
     * </pre>
     * 
     * <blockquote>
     * 
     */

    /** The key of the message: </ul> */
    public static final String ERRORS_FOOTER = "{errors.footer}";

    /** The key of the message: <li><i class="fa fa-exclamation-circle"></i> */
    public static final String ERRORS_PREFIX = "{errors.prefix}";

    /** The key of the message: </li> */
    public static final String ERRORS_SUFFIX = "{errors.suffix}";

    /** The key of the message: {item} must be false. */

 * {@code new FIFOEntry(anEntry)} instead of a plain entry object.
 *
 * <pre>
 * class FIFOEntry&lt;E extends Comparable&lt;? super E&gt;&gt;
 *     implements Comparable&lt;FIFOEntry&lt;E&gt;&gt; {
 *   final static AtomicLong seq = new AtomicLong();
 *   final long seqNum;
 *   final E entry;
 *   public FIFOEntry(E entry) {
 *     seqNum = seq.getAndIncrement();