## 🚀 Getting Started

### Requirements
- **Java 21 or higher** (Required for modern language features)
- **Maven 3.6+** or **Gradle 7+** for build management
- **Optional**: SLF4J or Commons Logging for logging support

### Maven Dependency
```xml
<dependency>
    <groupId>org.codelibs</groupId>
    <artifactId>corelib</artifactId>
    <version>0.7.0</version>
</dependency>

 * multimap is modified while an iteration over any of those collections is in progress, except
 * through the iterator's methods, the results of the iteration are undefined.
 *
 * <p>Keys and values may be null. All optional multimap methods are supported, and all returned
 * views are modifiable.
 *
 * <p>This class is not threadsafe when any concurrent operations update the multimap. Concurrent

import org.codelibs.spnego.SpnegoHttpFilter;
import org.codelibs.spnego.SpnegoHttpFilter.Constants;
import org.codelibs.spnego.SpnegoHttpServletResponse;
import org.codelibs.spnego.SpnegoPrincipal;
import org.dbflute.optional.OptionalEntity;
import org.lastaflute.web.login.credential.LoginCredential;
import org.lastaflute.web.response.ActionResponse;
import org.lastaflute.web.servlet.filter.RequestLoggingFilter;

import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.mail.send.supplement.SMailPostingDiscloser;
import org.dbflute.optional.OptionalThing;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

public class NotificationHelperTest extends UnitFessTestCase {

    private NotificationHelper notificationHelper;

 * {@linkplain Comparable natural ordering} also does not permit insertion of non-comparable objects
 * (doing so results in {@code ClassCastException}).
 *
 * <p>This class and its iterator implement all of the optional methods of the {@link
 * Collection} and {@link Iterator} interfaces. The Iterator provided in method {@link #iterator()}
 * is not guaranteed to traverse the elements of the MonitorBasedPriorityBlockingQueue in

        updateUI();  // Re-enable buttons and input
    }

    /**
     * Show status message
     * @param {string} status - Status type (thinking, error, ready)
     * @param {string} customMessage - Optional custom message to display
     */
    function showStatus(status, customMessage) {
        if (!elements.statusArea) return;

        var text = '';
        var cssClass = 'status-lozenge status-ready';

import org.codelibs.fess.rank.fusion.SearchResult.SearchResultBuilder;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.QueryResponseList;
import org.dbflute.optional.OptionalThing;
import org.junit.jupiter.api.Test;

public class RankFusionProcessorTest extends UnitFessTestCase {

    private static final String ID_FIELD = "_id";

    @Test

import org.codelibs.fess.dict.DictionaryManager;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;
import org.dbflute.optional.OptionalEntity;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.TestInfo;

public class CharMappingFileTest extends UnitFessTestCase {

    private CharMappingFile charMappingFile;

   * count, and a blank line.
   *
   * Each of the subsequent lines in the file is a record of the state of a cache entry. Each line
   * contains space-separated values: a state, a key, and optional state-specific values.
   *
   *   o DIRTY lines track that an entry is actively being created or updated. Every successful
   *     DIRTY action should be followed by a CLEAN or REMOVE action. DIRTY lines without a matching

    assertThat(ArbitraryInstances.get(Joiner.class).join(ImmutableList.of("a"))).isNotNull();
    assertThat(ArbitraryInstances.get(Splitter.class).split("a,b")).isNotNull();
    assertThat(ArbitraryInstances.get(com.google.common.base.Optional.class)).isAbsent();
    ArbitraryInstances.get(Stopwatch.class).start();
    assertThat(ArbitraryInstances.get(Ticker.class)).isNotNull();
    assertFreshInstanceReturned(Random.class);
    assertEquals(