### Key Architectural Patterns
- **Factory Pattern** - `BeanDescFactory` for creating bean descriptors, `ParameterizedClassDescFactory` for generic type handling
- **Builder Pattern** - `CopyOptions` for configuring bean copying operations with fluent API
- **Adapter Pattern** - Logging adapters (`JclLoggerAdapter`, `JulLoggerAdapter`) for different logging frameworks

	// if the existing Description from storage is empty.
	Comment string `xml:"-" json:"comment,omitempty"`
}

func (cred Credentials) String() string {
	var s strings.Builder
	s.WriteString(cred.AccessKey)
	s.WriteString(":")
	s.WriteString(cred.SecretKey)
	if cred.SessionToken != "" {
		s.WriteString("\n")
		s.WriteString(cred.SessionToken)
	}

| `LanguageHelper` | `org.codelibs.fess.helper` | Language detection and validation |
| `SystemHelper` | `org.codelibs.fess.helper` | UI language dropdown builder |
| `FessUserLocaleProcessProvider` | `org.codelibs.fess.mylasta.direction.sponsor` | User locale detection |

## Language Detection and Selection

### User Interface Language

 * <ul>
 *   <li>Preventing duplicate repositories that could cause confusion</li>
 *   <li>Rejecting null repository entries that would cause failures</li>
 *   <li>Maintaining consistent repository ordering for reproducible builds</li>
 * </ul>
 *
 * @since 4.0.0
 * @see RemoteRepository
 * @see Session#getRemoteRepositories()
 */
@Experimental
@Immutable
public interface RepositoryAwareRequest extends Request<Session> {

  }

  private static ImmutableSet<TypeToken<?>> arrayInterfaces() {
    ImmutableSet.Builder<TypeToken<?>> builder = ImmutableSet.builder();
    for (Class<?> interfaceType : Object[].class.getInterfaces()) {
      builder.add(TypeToken.of(interfaceType));
    }
    return builder.build();
  }

  private static void assertIsPrimitive(TypeToken<?> type) {
    assertTrue(type.isPrimitive());

    val flowControlListener = connectionListener as? FlowControlListener ?: FlowControlListener.None
    val http2Connection =
      Http2Connection
        .Builder(client = true, taskRunner)
        .socket(socket, route.address.url.host)
        .listener(this)
        .pingIntervalMillis(pingIntervalMillis)
        .flowControlListener(flowControlListener)
        .build()

     * all other executions until finished.
     * We also lock on a given project to forbid a forked lifecycle to be executed concurrently with the project.
     * TODO: ideally, the builder should take care of the ordering in a smarter way
     * TODO: and concurrency issues fixed with MNG-7157
     */
    protected class ProjectLock implements NoExceptionCloseable {
        final Lock acquiredAggregatorLock;

import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

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

import org.codelibs.fess.crawler.builder.RequestDataBuilder;
import org.codelibs.fess.crawler.client.CrawlerClient;
import org.codelibs.fess.crawler.client.CrawlerClientFactory;
import org.codelibs.fess.crawler.container.CrawlerContainer;

import org.apache.maven.lifecycle.LifecyclePhaseNotFoundException;
import org.apache.maven.lifecycle.MavenExecutionPlan;
import org.apache.maven.lifecycle.MojoExecutionConfigurator;
import org.apache.maven.lifecycle.internal.builder.BuilderCommon;
import org.apache.maven.plugin.BuildPluginManager;
import org.apache.maven.plugin.InvalidPluginDescriptorException;
import org.apache.maven.plugin.MojoExecution;

	return []clause.Interface{emptyQueryClause{Field: f}}
}

func (sd emptyQueryClause) Name() string {
	return "empty"
}

func (sd emptyQueryClause) Build(clause.Builder) {
}

func (sd emptyQueryClause) MergeClause(*clause.Clause) {
}

func (sd emptyQueryClause) ModifyStatement(stmt *gorm.Statement) {
	// do nothing
}