if (supportsRemove) {
      int initialSize = map.size();
      assertTrue(keys.removeAll(singleton(key)));
      assertEquals(initialSize - 1, map.size());
      assertFalse(map.containsKey(key));
    } else {
      assertThrows(UnsupportedOperationException.class, () -> keys.removeAll(singleton(key)));
    }
    assertInvariants(map);
  }

  public void testKeySetRetainAll() {

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

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

import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Map;

import org.apache.maven.api.Constants;
import org.codehaus.plexus.components.secdispatcher.Dispatcher;

 */
package org.apache.maven.lifecycle.providers.packaging;

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

/**
 * {@code ejb} packaging plugins bindings provider for {@code default} lifecycle.
 */
@Named("ejb")
@Singleton
public final class EjbLifecycleMappingProvider extends AbstractLifecycleMappingProvider {
    // START SNIPPET: ejb

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

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

import java.util.Collections;
import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;

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

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

import java.util.Objects;
import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.maven.api.JavaPathType;
import org.apache.maven.api.Type;

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

import java.util.Collection;

import org.apache.maven.api.Event;
import org.apache.maven.api.EventType;
import org.apache.maven.api.Listener;
import org.apache.maven.eventspy.EventSpy;
import org.apache.maven.execution.ExecutionEvent;

/**
 * Bridges between Maven3 events and Maven4 events.
 */
@Named
@Singleton
public class EventSpyImpl implements EventSpy {

 * 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;

import org.apache.maven.artifact.resolver.ResolutionNode;
import org.apache.maven.artifact.versioning.ArtifactVersion;
import org.apache.maven.artifact.versioning.OverConstrainedVersionException;

/**

 */
package org.apache.maven.lifecycle.providers.packaging;

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

/**
 * {@code maven-plugin} packaging plugins bindings provider for {@code default} lifecycle.
 */
@Named("maven-plugin")
@Singleton
public final class MavenPluginLifecycleMappingProvider extends AbstractLifecycleMappingProvider {
    // START SNIPPET: maven-plugin

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

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

import org.codehaus.plexus.classworlds.realm.ClassRealm;
import org.codehaus.plexus.component.configurator.BasicComponentConfigurator;
import org.codehaus.plexus.component.configurator.ComponentConfigurationException;

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

import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;

import org.apache.maven.project.MavenProject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Default implementation of {@link BuildResumptionAnalyzer}.
 */
@Named
@Singleton