throw e;
        }
    }

    public void put(Key cacheKey, PluginDescriptor pluginDescriptor) {
        descriptors.put(cacheKey, clone(pluginDescriptor));
    }

    protected static PluginDescriptor clone(PluginDescriptor original) {
        return new PluginDescriptor(original);
    }

    private static final class CacheKey implements Key {

/**
 */
public class PluginConfigurationException extends Exception {
    private PluginDescriptor pluginDescriptor;

    private String originalMessage;

    public PluginConfigurationException(PluginDescriptor pluginDescriptor, String originalMessage) {
        super(originalMessage);
        this.pluginDescriptor = pluginDescriptor;
        this.originalMessage = originalMessage;
    }

        Plugin plugin = new Plugin();
        Exception cause = new PluginContainerException(plugin, null, null, cause2);
        PluginDescriptor pluginDescriptor = new PluginDescriptor();
        MojoDescriptor mojoDescriptor = new MojoDescriptor();
        mojoDescriptor.setPluginDescriptor(pluginDescriptor);
        MojoExecution mojoExecution = new MojoExecution(mojoDescriptor);

import org.apache.maven.plugin.descriptor.PluginDescriptor;

/**
 * DefaultMavenPluginValidator
 */
@Named
@Singleton
class DefaultMavenPluginValidator implements MavenPluginValidator {

    @Override
    public void validate(Artifact pluginArtifact, PluginDescriptor pluginDescriptor, List<String> errors) {
        if (!pluginArtifact.getGroupId().equals(pluginDescriptor.getGroupId())) {

                "maven-it-plugin",
                "0.1",
                "compile",
                "jar",
                null,
                new DefaultArtifactHandler("ignore"));
        PluginDescriptor descriptor = new PluginDescriptor();
        descriptor.setGroupId("org.apache.maven.its.plugins");
        descriptor.setArtifactId("maven-it-plugin");
        descriptor.setVersion("0.1");
        List<String> errors = new ArrayList<>();

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!

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.plugin.descriptor.PluginDescriptor;

/**
 * Reads and writes a {@link PluginDescriptor} object to/from XML.
 *
 * @since 4.0.0
 */
@Experimental

                    InvalidDependencyVersionException, PluginManagerException, PluginConfigurationException;

    PluginDescriptor getPluginDescriptorForPrefix(String prefix);

    Plugin getPluginDefinitionForPrefix(String prefix, MavenSession session, MavenProject project);

    PluginDescriptor verifyPlugin(
            Plugin plugin, MavenProject project, Settings settings, ArtifactRepository localRepository)

        }
    }

    @Override
    public void write(XmlWriterRequest<PluginDescriptor> request) throws XmlWriterException {
        nonNull(request, "request");
        PluginDescriptor content = nonNull(request.getContent(), "content");
        Path path = request.getPath();
        OutputStream outputStream = request.getOutputStream();

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 {

    public PluginDescriptor loadPlugin(