}
            for (Artifact consumer : consumers) {
                result.remove(consumer);
                // Replace the consumer POM as the main POM (no classifier)
                result.add(new DefaultArtifact(
                        consumer.getGroupId(),
                        consumer.getArtifactId(),
                        "",
                        consumer.getExtension(),

 *       This allows modern features like mixins to be preserved in the consumer POM.</li>
 * </ul>
 * <p>
 * <b>Mixin Handling</b>: Mixins are only supported in model version 4.2.0 or later. If a POM contains mixins:
 * <ul>
 *   <li>Setting {@code preserve.model.version=true} preserves them in the consumer POM with model version 4.2.0</li>
 *   <li>Setting {@code maven.consumer.pom.flatten=true} removes them during transformation</li>

        DeployRequest result = transformer.remapDeployArtifacts(session, request);

        // Should have both consumer POM (no classifier) and build POM (with "build" classifier)
        Collection<Artifact> artifacts = result.getArtifacts();
        assertEquals(3, artifacts.size()); // original jar + consumer pom + build pom

        InternalMavenSession.from(InternalSession.from(session))
                .getMavenSession()
                .getRequest()
                .setRootDirectory(Paths.get("src/test/resources/consumer/trivial"));

        Path file = Paths.get("src/test/resources/consumer/trivial/child/pom.xml");

        ModelBuilder.ModelBuilderSession mbs = modelBuilder.newSession();

 */
public abstract class LookupInvoker<C extends LookupContext> implements Invoker {
    protected final Lookup protoLookup;

    @Nullable
    protected final Consumer<LookupContext> contextConsumer;

    public LookupInvoker(Lookup protoLookup, @Nullable Consumer<LookupContext> contextConsumer) {
        this.protoLookup = requireNonNull(protoLookup);
        this.contextConsumer = contextConsumer;
    }

    @Override

import java.io.StringWriter;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.function.Consumer;
import java.util.function.UnaryOperator;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.DefaultParser;
import org.apache.commons.cli.DeprecatedAttributes;

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

import java.util.function.Consumer;

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

/**
 * Service responsible for checking if plugin's prerequisites are met.
 */
@FunctionalInterface
public interface MavenPluginPrerequisitesChecker extends Consumer<PluginDescriptor> {
    /**
     *
     * @param pluginDescriptor the plugin descriptor to check

    }

    /**
     * Check if the consumer POM feature is active.
     */
    public static boolean consumerPom(@Nullable Map<String, ?> userProperties) {
        return doGet(userProperties, Constants.MAVEN_CONSUMER_POM, !mavenMaven3Personality(userProperties));
    }

    /**
     * Check if consumer POM flattening is enabled.
     */

        // Prefer the consumer POM when resolving POMs from the project-local repository,
        // to avoid treating a build POM as a repository (consumer) POM.
        if ("pom".equals(artifact.getExtension())) {
            String classifier = artifact.getClassifier();
            if (classifier == null || classifier.isEmpty()) {
                Path consumer = getArtifactPath(

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

import java.util.List;
import java.util.Optional;
import java.util.function.Consumer;

import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.ParseException;
import org.apache.maven.api.annotations.Nonnull;
import org.apache.maven.api.cli.Options;