* load on the garbage collector by only using a constant number of internal objects.
 *
 * <p>This class should not be assumed to be universally superior to {@code
 * java.util.LinkedHashMap}. Generally speaking, this class reduces object allocation and memory
 * consumption at the price of moderately increased constant factors of CPU. Only use this class
 * when there is a specific reason to prioritize memory over CPU.
 *
 * @author Louis Wasserman
 */

}
```

## 8. Performance Metrics

### 8.1 Channel Statistics
```java
public class MultiChannelStatistics {
    private final Map<String, ChannelStatistics> channelStats;
    
    public class ChannelStatistics {
        private final AtomicLong bytesSent = new AtomicLong();
        private final AtomicLong bytesReceived = new AtomicLong();

   * order described in the <a href="#iteration">class documentation</a>.
   */
  public static <K, V> ImmutableMultimap<K, V> of(K k1, V v1, K k2, V v2, K k3, V v3) {
    return ImmutableListMultimap.of(k1, v1, k2, v2, k3, v3);
  }

  /**
   * Returns an immutable multimap containing the given entries, in the "key-grouped" insertion
   * order described in the <a href="#iteration">class documentation</a>.
   */

import org.dbflute.utflute.core.PlainTestCase;

/**
 * Test class for Transformer interface.
 * Tests the contract and behavior of Transformer implementations.
 */
public class TransformerTest extends PlainTestCase {

    /**
     * Basic test implementation of Transformer
     */
    public static class TestTransformer implements Transformer {
        private String name;

* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto" class="external-link" target="_blank">X-Forwarded-Proto</a>
* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host" class="external-link" target="_blank">X-Forwarded-Host</a>

///

import java.io.Serializable;
import java.util.List;

import org.codelibs.fess.util.ComponentUtil;

/**
 * Pager class for handling user list pagination.
 * This class manages pagination state and user search criteria for the user management interface.
 */
public class UserPager implements Serializable {

    /**
     * Default constructor for UserPager.
     */
    public UserPager() {

import org.mockito.quality.Strictness;

import jcifs.SmbTransport;
import jcifs.internal.CommonServerMessageBlock;

/**
 * Unit tests for ChannelFailover
 */
@ExtendWith(MockitoExtension.class)
@MockitoSettings(strictness = Strictness.LENIENT)
class ChannelFailoverTest {

    @Mock
    private ChannelManager mockChannelManager;

    @Mock
    private ChannelLoadBalancer mockLoadBalancer;

    @Mock

import org.codelibs.fess.crawler.helper.MimeTypeHelper;

/**
 * MimeTypeHelperImpl is a helper class that detects the MIME type of a given input stream or filename.
 * It uses the Apache Tika library to detect the MIME type.
 *
 * <p>
 * This class provides methods to:
 * </p>
 * <ul>
 *   <li>Detect the MIME type based on the input stream and filename.</li>

 *
 */
public class AdminSereqAction extends FessAdminAction {

    /**
     * Default constructor.
     */
    public AdminSereqAction() {
        super();
    }

    /** Role name for admin search request operations */
    public static final String ROLE = "admin-sereq";

    private static final Logger logger = LogManager.getLogger(AdminSereqAction.class);

    @Override

import org.codelibs.fess.util.ResourceUtil;

/**
 * Helper class for managing theme installation and uninstallation.
 * Handles the extraction and deployment of theme files from JAR artifacts.
 */
public class ThemeHelper {
    private static final Logger logger = LogManager.getLogger(ThemeHelper.class);

    /**
     * Default constructor for ThemeHelper.
     */
    public ThemeHelper() {