assertNotNull(manager);
    }

    // Test insert with no chains
    @Test
    public void test_insert_noChains() {
        User user = createTestUser("testuser");
        authenticationManager.insert(user);
        // Should not throw exception even with no chains
    }

    // Test insert with single chain
    @Test
    public void test_insert_singleChain() {

import org.gradle.api.tasks.PathSensitive;
import org.gradle.api.tasks.PathSensitivity;
import org.gradle.api.tasks.TaskAction;
import org.gradle.internal.UncheckedException;

import javax.inject.Inject;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
import java.util.Collections;

@CacheableTask

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.artifact.resolver;

import javax.inject.Inject;

import java.util.Collections;

import org.apache.maven.artifact.AbstractArtifactComponentTestCase;
import org.apache.maven.artifact.Artifact;
import org.junit.jupiter.api.BeforeEach;

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.repository.legacy.resolver.conflict;

import javax.inject.Named;
import javax.inject.Singleton;

/**
 * The default conflict resolver that delegates to the nearest strategy.
 *
 * @see NearestConflictResolver

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.repository.legacy;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.io.File;
import java.util.Date;
import java.util.HashMap;
import java.util.Properties;

import org.apache.maven.artifact.Artifact;

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.repository.internal;

import javax.inject.Named;
import javax.inject.Singleton;

import org.apache.maven.model.building.ModelCache;
import org.eclipse.aether.RepositorySystemSession;

/**
 * Default implementation of {@link ModelCacheFactory}.
 *

        urlQueue.setMethod(Constants.GET_METHOD);
        insert(urlQueue);
    }

    /**
     * Inserts a URL queue entry into the OpenSearch index.
     *
     * @param urlQueue The URL queue entry to insert.
     */
    @Override
    public void insert(final OpenSearchUrlQueue urlQueue) {
        try {
            super.insert(urlQueue, urlQueue.getId() == null ? OpType.CREATE : OpType.INDEX);

import java.util.Map;
import java.util.stream.Collectors;
import javax.inject.Inject;

/**
 * Performs additional checks on changelog files, beyond whether they conform to the schema.
 */
public class ValidateChangelogEntryTask extends DefaultTask {
    private final ConfigurableFileCollection changelogs;
    private final ProjectLayout projectLayout;

    @Inject

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.plugin.internal;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.util.Map;

import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.resolver.ArtifactNotFoundException;

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.lifecycle.internal;

import javax.inject.Inject;
import javax.inject.Named;
import javax.inject.Singleton;

import java.util.ArrayList;
import java.util.Comparator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;