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/**
 * Defines events that Maven fires during a build. <strong>Warning:</strong> This interface might be extended in future
 * Maven versions to support further events. Hence it is strongly recommended to derive custom listeners from
 * {@link AbstractExecutionListener} in order to avoid interoperability problems.
 *
 */
public interface ExecutionListener {

    void projectDiscoveryStarted(ExecutionEvent event);

import org.apache.maven.api.annotations.Immutable;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.model.PluginContainer;

/**
 * Interface representing a Maven project packaging.
 * <p>
 * TODO: define how to plug in new packaging definitions using the SPI.
 *   the packaging are currently defined by Maven 3 {@code Provider<LifecycleMapping>}
 *
 * @since 4.0.0
 */
@Experimental
@Immutable

     * used as well.
     *
     * @param prefix The plugin prefix to resolve, must not be {@code null}.
     * @param session The build session from which to derive further settings, must not be {@code null}.
     */
    public DefaultPluginPrefixRequest(String prefix, MavenSession session) {
        setPrefix(prefix);

        setRepositorySession(session.getRepositorySession());

                List<String> exports = exportedPackages.get(extensionRealm);

                if (exports == null || exports.isEmpty()) {
                    /*
                     * Most existing extensions don't define exported packages, i.e. no classes are to be exposed to
                     * plugins, yet the components provided by the extension (e.g. artifact handlers) must be

                                </requireJavaVersion>
                                <requireNoRepositories>
                                    <message>Best Practice is to never define repositories in pom.xml (use a repository
                                        manager instead).
                                    </message>
                                </requireNoRepositories>