* supplied by the user of the class. For example, {@code Multiset.Entry.getElement()} returns
 * {@code @ParametricNullness E}, which means:
 *
 * <ul>
 *   <li>{@code getElement} on a {@code Multiset.Entry<@NonNull String>} returns {@code @NonNull
 *       String}.
 *   <li>{@code getElement} on a {@code Multiset.Entry<@Nullable String>} returns {@code @Nullable
 *       String}.
 * </ul>
 *

 * supplied by the user of the class. For example, {@code Multiset.Entry.getElement()} returns
 * {@code @ParametricNullness E}, which means:
 *
 * <ul>
 *   <li>{@code getElement} on a {@code Multiset.Entry<@NonNull String>} returns {@code @NonNull
 *       String}.
 *   <li>{@code getElement} on a {@code Multiset.Entry<@Nullable String>} returns {@code @Nullable
 *       String}.
 * </ul>
 *

 * supplied by the user of the class. For example, {@code Multiset.Entry.getElement()} returns
 * {@code @ParametricNullness E}, which means:
 *
 * <ul>
 *   <li>{@code getElement} on a {@code Multiset.Entry<@NonNull String>} returns {@code @NonNull
 *       String}.
 *   <li>{@code getElement} on a {@code Multiset.Entry<@Nullable String>} returns {@code @Nullable
 *       String}.
 * </ul>
 *

 * supplied by the user of the class. For example, {@code Multiset.Entry.getElement()} returns
 * {@code @ParametricNullness E}, which means:
 *
 * <ul>
 *   <li>{@code getElement} on a {@code Multiset.Entry<@NonNull String>} returns {@code @NonNull
 *       String}.
 *   <li>{@code getElement} on a {@code Multiset.Entry<@Nullable String>} returns {@code @Nullable
 *       String}.
 * </ul>
 *

package org.apache.maven.cling.invoker.mvn;

import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Path;
import java.util.List;
import java.util.Map;

import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.cli.ParserRequest;
import org.apache.maven.api.cli.extensions.CoreExtension;
import org.apache.maven.api.cli.mvn.MavenInvokerRequest;
import org.apache.maven.api.cli.mvn.MavenOptions;

     *
     * @return the id of this type, never {@code null}.
     */
    @Nonnull
    String id();

    /**
     * Returns the dependency type language.
     *
     * @return the language of this type, never {@code null}.
     */
    @Nonnull
    Language getLanguage();

    /**
     * Get the file extension of artifacts of this type.
     *

 */
package org.apache.maven.api;

import java.nio.file.Path;

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Immutable;
import org.apache.maven.api.annotations.Nonnull;

/**
 * <p>The <dfn>local repository</dfn> is a directory on the developer's machine where
 * Maven stores all the downloaded artifacts (such as dependencies, plugins,

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;

/**
 * A listener for session events.
 * TODO: open this to other events like similar to {@code org.apache.maven.eventspy.EventSpy}
 *
 * @since 4.0.0
 */
@Experimental
@FunctionalInterface
@Consumer
public interface Listener {
    void onEvent(@Nonnull Event event);

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.annotations.Nullable;

/**
 * The Artifact Result
 *
 * @since 4.0.0
 */
@Experimental
public interface ArtifactResolverResult {
    /**
     * @return {@link Artifact}
     */
    @Nonnull
    Collection<DownloadedArtifact> getArtifacts();

    @Nullable

 */
@Deprecated(since = "4.0.0")
final class PluginsMetadata extends MavenMetadata {
    static final class PluginInfo {
        @Nonnull
        final String groupId;

        @Nonnull
        private final String artifactId;

        @Nullable
        private final String goalPrefix;

        @Nullable
        private final String name;