import org.codehaus.plexus.classworlds.realm.ClassRealm;

/**
 * Provides information about artifacts (identified by groupId:artifactId string key) and classpath elements exported by
 * Maven core itself or a Maven core extension.
 *
 * @since 3.3.0
 */
public class CoreExtensionEntry {
    private final ClassRealm realm;

    private final Set<String> artifacts;

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

import java.util.List;
import java.util.Map;

import org.apache.maven.model.Model;
import org.apache.maven.model.Plugin;
import org.codehaus.plexus.classworlds.realm.ClassRealm;
import org.eclipse.aether.artifact.Artifact;

/**

import org.codehaus.plexus.classworlds.realm.ClassRealm;

/**
 * Access to core {@link ClassRealm}.
 *
 * @since 4.0.0
 */
@Experimental
public interface CoreRealm {

    /**
     * Obtain the {@link ClassRealm} used for Maven Core.
     *
     * @return the class realm of core.
     */
    @Nonnull
    ClassRealm getRealm();

    /**

import org.apache.maven.artifact.Artifact;
import org.apache.maven.project.ExtensionDescriptor;
import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.classworlds.realm.ClassRealm;
import org.codehaus.plexus.classworlds.realm.NoSuchRealmException;
import org.codehaus.plexus.personality.plexus.lifecycle.phase.Disposable;

/**

import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.codehaus.plexus.classworlds.realm.ClassRealm;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.repository.RemoteRepository;

/**
 */
public interface BuildPluginManager {
    // igorf: Way too many declared exceptions!

    }

    /**
     * CacheRecord
     */
    class CacheRecord {

        private final ClassRealm realm;

        private final ExtensionDescriptor descriptor;

        private final List<Artifact> artifacts;

        CacheRecord(ClassRealm realm, ExtensionDescriptor descriptor, List<Artifact> artifacts) {
            this.realm = realm;
            this.descriptor = descriptor;

import org.codehaus.plexus.classworlds.realm.ClassRealm;

@Named
@Singleton
public class DefaultCoreRealm implements CoreRealm {

    private final PlexusContainer container;

    @Inject
    public DefaultCoreRealm(PlexusContainer container) {
        this.container = container;
    }

    @Override
    public ClassRealm getRealm() {
        return container.getContainerRealm();
    }

import org.apache.maven.plugin.MojoExecution;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.codehaus.plexus.classworlds.realm.ClassRealm;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.repository.RemoteRepository;

/**
 */
public class BuildPluginManagerStub implements BuildPluginManager {

    @Override

 */
package org.apache.maven.extension.internal;

import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.codehaus.plexus.classworlds.realm.ClassRealm;

import static java.util.function.Function.identity;
import static java.util.stream.Collectors.collectingAndThen;
import static java.util.stream.Collectors.toMap;

/**

    }

    /**
     * TODO pluginDescriptor classRealm and artifacts are set as a side effect of this
     *      call, which is not nice.
     * @throws PluginResolutionException
     */
    @Override
    public ClassRealm getPluginRealm(MavenSession session, PluginDescriptor pluginDescriptor)
            throws PluginResolutionException, PluginManagerException {
        ClassRealm pluginRealm = pluginDescriptor.getClassRealm();