import org.eclipse.aether.RepositorySystemSession;

import static java.util.Objects.requireNonNull;

/**
 * A Maven execution session.
 *
 */
public class MavenSession implements Cloneable {
    private final MavenExecutionRequest request;

    private final MavenExecutionResult result;

    private final RepositorySystemSession repositorySystemSession;

        <constraint name="__context__"...

 * type exist, the one with the highest priority will be selected for injection.
 * <p>
 * Example usage:
 * <pre>
 * {@literal @}Priority(100)
 * public class PreferredImplementation implements Service {
 *     // Implementation
 * }
 * </pre>
 *
 * @since 4.0.0
 */
@Target({TYPE, METHOD})
@Retention(RUNTIME)
@Documented
public @interface Priority {
    /**

 * under the License.
 */
package org.apache.maven.execution;

/**
 * Provides a skeleton implementation for execution listeners. The methods of this class are empty.
 *
 */
public class AbstractExecutionListener implements ExecutionListener {

    @Override
    public void projectDiscoveryStarted(ExecutionEvent event) {
        // default does nothing
    }

    @Override
    public void sessionStarted(ExecutionEvent event) {

import org.eclipse.aether.version.Version;
import org.eclipse.aether.version.VersionConstraint;
import org.eclipse.aether.version.VersionScheme;

@Named
@Singleton
public class MavenPluginJavaPrerequisiteChecker implements MavenPluginPrerequisitesChecker {
    private final VersionScheme versionScheme;

    @Inject
    public MavenPluginJavaPrerequisiteChecker(VersionScheme versionScheme) {
        this.versionScheme = versionScheme;

/**
 * A configuration listener to help validate the plugin configuration. For instance, check for required but missing
 * parameters.
 *
 */
class ValidatingConfigurationListener implements ConfigurationListener {
    private final Object mojo;

    private final ConfigurationListener delegate;

    private final Map<String, Parameter> missingParameters;

import org.apache.commons.jxpath.ri.model.NodePointer;
import org.apache.maven.api.xml.XmlNode;

/**
 * An attribute iterator for JXPath to support <code>Xpp3Dom</code>.
 *
 */
class Xpp3DomAttributeIterator implements NodeIterator {

    private NodePointer parent;

    private XmlNode node;

    private List<Map.Entry<String, String>> attributes;

    private Map.Entry<String, String> attribute;

// TODO remove the coreArtifactFilterManager

/**
 * DefaultBuildPluginManager
 */
@Named
@Singleton
public class DefaultBuildPluginManager implements BuildPluginManager {

    private final MavenPluginManager mavenPluginManager;
    private final LegacySupport legacySupport;
    private final MojoExecutionScope scope;

@Named("builtin")
@Singleton
public class BuiltinShellCommandRegistryFactory implements ShellCommandRegistryFactory {
    @Override
    public CommandRegistry createShellCommandRegistry(LookupContext context) {
        return new BuiltinShellCommandRegistry(context);
    }

    private static class BuiltinShellCommandRegistry extends JlineCommandRegistry implements AutoCloseable {
        private final LookupContext shellContext;

 *
 * @see ActivationProperty
 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */
@Named("property")
@Singleton
@Deprecated(since = "4.0.0")
public class PropertyProfileActivator implements ProfileActivator {

    @Override
    public boolean isActive(Profile profile, ProfileActivationContext context, ModelProblemCollector problems) {
        Activation activation = profile.getActivation();