* </ul>
   *
   * <p>Note that {@code StandardSystemProperty} does not provide constants for more recently added
   * properties, including:
   *
   * <ul>
   *   <li>{@code java.vendor.version} (added in Java 11, listed as optional as of Java 13)
   *   <li>{@code jdk.module.*} (added in Java 9, optional)
   * </ul>
   */
  public @Nullable String value() {

 *   <li>{@link #getQueryWordsNum()}: Returns the number of query words in the suggestion index.</li>
 * </ul>
 *
 * <p>Protected Methods:
 * <ul>
 *   <li>{@link #createDefaultIndexer()}: Creates a default SuggestIndexer instance.</li>
 * </ul>
 *
 * <p>Private Methods:
 * <ul>
 *   <li>{@link #getNum(QueryBuilder)}: Returns the number of words matching the given query.</li>

                                                    arg2="${f:h(pager.allRecordCount)}"/>
                                    </div>
                                    <div class="col-sm-10">
                                        <ul class="pagination pagination-sm m-0 float-right">
                                            <c:if test="${pager.existPrePage}">
                                                <li class="page-item"><la:link

 *
 * <p>The DataIndexHelper supports:</p>
 * <ul>
 *   <li>Concurrent crawling of multiple data configurations</li>
 *   <li>Thread pool management for crawler execution</li>
 *   <li>Session-based crawling with cleanup operations</li>
 *   <li>Old document deletion after successful crawling</li>
 *   <li>Crawling execution monitoring and timing</li>
 * </ul>
 */
public class DataIndexHelper {

  private static final Object[] NO_ARGS = {};

  /**
   * {@inheritDoc}
   *
   * <ul>
   *   <li>{@code proxy.hashCode()} delegates to {@link AbstractInvocationHandler#hashCode}
   *   <li>{@code proxy.toString()} delegates to {@link AbstractInvocationHandler#toString}
   *   <li>{@code proxy.equals(argument)} returns true if:
   *       <ul>
   *         <li>{@code proxy} and {@code argument} are of the same type

   *
   * <ul>
   *   <li>{@linkplain LoadingCache#get(Object) awaiting the result of a pending load} rather than
   *       starting a redundant one
   *   <li>eliminating the error-prone caching boilerplate
   *   <li>tracking load {@linkplain #stats statistics}
   * </ul>
   *

     * A dependency with this path type will not necessarily be placed on the class path.
     * There are two circumstances where the dependency may nevertheless be placed somewhere else:
     *
     * <ul>
     *   <li>If {@link #MODULES} path type is also set, then the dependency can be placed either on the
     *       class path or on the module path, but only one of those. The choice is up to the plugin,

 *
 * <p>This class provides the following functionalities:</p>
 * <ul>
 *   <li>Normalization of a string containing Hankaku Kana to Zenkaku Kana.</li>
 *   <li>Conversion of individual Hankaku Kana characters to Zenkaku Kana characters.</li>
 *   <li>Handling of voiced (ﾞ) and semi-voiced (ﾟ) sound marks to produce the correct Zenkaku Kana characters.</li>
 * </ul>
 *
 * <p>Example usage:</p>
 * <pre>
 * {@code

							<p><la:message key="labels.menu_maintenance" /></p>
						</a></li></c:if>

				</ul></li></c:if>

			<c:if test="${fe:fileExists('/WEB-INF/view/common/admin/sidebar_extra.jsp')}">
				<c:import url="/WEB-INF/view/common/admin/sidebar_extra.jsp" />
			</c:if>
		</ul>
		</nav>
	</div>

 * <ul>
 *   <li>{@link #defaultSettings()}</li>
 *   <li>{@link #defaultArraySettings()}</li>
 * </ul>
 *
 * <p>Index settings can be loaded from a JSON file using:</p>
 * <ul>
 *   <li>{@link #loadIndexSettings()}</li>
 * </ul>
 *
 * <p>A builder for SuggestSettings can be obtained using:</p>
 * <ul>
 *   <li>{@link #builder()}</li>
 * </ul>
 *
 * @see Client
 * @see GetResponse