/**
 * Service responsible for checking if plugin's prerequisites are met.
 */
@FunctionalInterface
public interface MavenPluginPrerequisitesChecker extends Consumer<PluginDescriptor> {
    /**
     *
     * @param pluginDescriptor the plugin descriptor to check
     * @throws IllegalStateException in case the checked prerequisites are not met
     */
    @Override
    void accept(PluginDescriptor pluginDescriptor);

 * @deprecated use {@code org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public interface ModelProblemCollector {

    /**
     * Adds the specified problem.
     *
     * @param req must not be null
     */
    void add(ModelProblemCollectorRequest req);

 */
@Deprecated(since = "4.0.0")
public interface ProjectDependenciesResolver {

    /**
     * Resolves the transitive dependencies of a project.
     *
     * @param request The resolution request holding the parameters, must not be {@code null}.
     * @return The resolution result, never {@code null}.
     * @throws DependencyResolutionException If any project dependency could not be resolved.

import org.apache.maven.api.cli.InvokerRequest;
import org.apache.maven.api.cli.extensions.CoreExtension;

/**
 * Core extension selector: selects which entries to load from {@link InvokerRequest#coreExtensions()}.
 *
 * @param <C> The context type.
 */
public interface CoreExtensionSelector<C extends LookupContext> {
    /**
     * Selects core extensions to be loaded from list of all sources detected.
     */
    @Nonnull

     */
    public Comparator<MavenProject> getComparator() {
        return comparator;
    }

    /**
     * Gets the calculated weight for a project, representing its dependency chain length.
     *
     * @param project the project
     * @return the project's weight (higher means longer dependency chain)
     */
    public long getProjectWeight(MavenProject project) {
        // First check if weight is already calculated

 */
@Deprecated(since = "4.0.0")
public interface ToolchainsBuilder {

    /**
     * Builds the effective toolchains of the specified toolchains files.
     *
     * @param request The toolchains building request that holds the parameters, must not be {@code null}.
     * @return The result of the toolchains building, never {@code null}.

    /**
     * Inject a standard <code>Maven</code> logging mechanism to allow this <code>Mojo</code> to communicate events
     * and feedback to the user.
     *
     * @param log a new logger
     *
     * @deprecated Use SLF4J directly
     */
    @Deprecated
    void setLog(Log log);

    /**

        format(result.docbook) == '''<para><emphasis>para 1</emphasis></para><para>para 2</para>'''
    }

    def ignoresEmptyPElements() {
        _ * classMetaData.rawCommentText >> 'para 1<p/><p></p>para 2<p></p>'

        when:
        def result = parser.parse(classMetaData, listener)

        then:
        format(result.docbook) == '''<para>para 1</para><para>para 2</para>'''
    }

     * <ul>
     *   <li>Both forward and back slashes as path separators</li>
     *   <li>Parent directory references (..)</li>
     *   <li>Both file and directory targets</li>
     * </ul>
     *
     * @param relative path to resolve relative to this source
     * @return the resolved source, or null if resolution not possible
     * @throws NullPointerException if relative is null
     */
    @Nullable

import java.util.function.Function;

import org.apache.maven.api.cli.Options;
import org.apache.maven.api.cli.ParserRequest;

/**
 * Options that are "layered" by precedence order.
 *
 * @param <O> The type of options.
 */
public abstract class LayeredOptions<O extends Options> implements Options {
    protected final List<O> options;

    protected LayeredOptions(List<O> options) {