*/
    @Nonnull
    Optional<OutputStream> err();

    /**
     * Returns a list of core extensions, if configured in the .mvn/extensions.xml file.
     *
     * @return an {@link Optional} containing the list of core extensions, or empty if not configured
     */
    @Nonnull
    Optional<List<CoreExtension>> coreExtensions();

    /**

import org.apache.commons.lang3.StringUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.io.ReaderUtil;
import org.codelibs.core.io.SerializeUtil;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.crawler.builder.RequestDataBuilder;
import org.codelibs.fess.crawler.client.CrawlerClient;

import java.io.File;
import java.net.JarURLConnection;
import java.net.URL;
import java.util.zip.ZipInputStream;

import junit.framework.TestCase;

import org.codelibs.core.jar.JarFileUtil;
import org.codelibs.core.lang.ClassUtil;
import org.junit.Before;
import org.junit.Test;

/**
 * @author taedium
 */
public class ClassTraversalTest {

    private static int count = 0;

    /**

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.core.io;

import static org.codelibs.core.io.CopyUtil.copy;
import static org.hamcrest.CoreMatchers.is;
import static org.junit.Assert.assertThat;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.core.io;

import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotEmpty;
import static org.codelibs.core.misc.AssertionUtil.assertArgumentNotNull;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileReader;

 */
package org.codelibs.fess.app.web.base.login;

import static org.codelibs.core.stream.StreamUtil.stream;

import java.util.HashSet;
import java.util.Set;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.entity.FessUser;
import org.codelibs.fess.helper.SystemHelper;

 * governing permissions and limitations under the License.
 */
package org.codelibs.core.net;

import junit.framework.TestCase;

/**
 * @author higa
 *
 */
public class UuidUtilTest extends TestCase {

    /**
     * Test method for {@link org.codelibs.core.net.UuidUtil#create()}.
     */
    public void testCreate() {
        final String uuid = UuidUtil.create();

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.core.exception;

import static org.codelibs.core.collection.ArrayUtil.asArray;

import java.lang.reflect.Method;

import org.codelibs.core.lang.MethodUtil;

/**
 * {@link Method}が見つからなかったときにスローされる例外です。
 *
 * @author higa
 *
 */

 */
package org.codelibs.core.timer;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import org.codelibs.core.collection.SLinkedList;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.core.log.Logger;

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.helper;

import org.codelibs.core.concurrent.CommonPoolUtil;
import org.codelibs.core.lang.ThreadUtil;

public abstract class AbstractConfigHelper {

    protected long reloadInterval = 1000L;

    public void update() {
        CommonPoolUtil.execute(this::load);
    }