.map(Plugin::getArtifactId) // managed by us, groupId is always o.a.m.plugins
                .collect(Collectors.toList());

        if (!unversionedPlugins.isEmpty()) {
            logger.warn("Version not locked for default bindings plugins " + unversionedPlugins
                    + ", you should define versions in pluginManagement section of your " + "pom.xml or parent");
        }

        return executionPlan;
    }

        getBuilderCommon(logger)
                .resolveBuildPlan(session1, ProjectDependencyGraphStub.A, taskSegment1, new HashSet<>());

        verify(logger)
                .warn("Version not locked for default bindings plugins ["
                        + "stub-plugin-initialize, "
                        + "stub-plugin-process-resources, "
                        + "stub-plugin-compile, "

    @Deprecated
    void setBlacklisted(boolean blackListed);

    /**
     * @return whether the repository is blocked
     * @since 3.8.1
     **/
    boolean isBlocked();

    /**
     * @param blocked block the repository?
     * @since 3.8.1
     **/
    void setBlocked(boolean blocked);

    //
    // New interface methods for the repository system.
    //
    /**
     *

      <url>http://my.repository.com/repo/path</url>
    </mirror>
    -->
    <mirror>
      <id>maven-default-http-blocker</id>
      <mirrorOf>external:http:*</mirrorOf>
      <name>Pseudo repository to mirror external repositories initially using HTTP.</name>
      <url>http://0.0.0.0/</url>
      <blocked>true</blocked>
    </mirror>
  </mirrors>

  <!-- repositories

    /**
     * Creates a new source backed by the specified file.
     *
     * @param file The file, must not be {@code null}.
     * @deprecated Use {@link #FileSource(Path)} instead.
     */
    @Deprecated
    public FileSource(File file) {
        this(Objects.requireNonNull(file, "file cannot be null").toPath());
    }

    /**
     * Creates a new source backed by the specified file.
     *

When a plugin has a complete and valid configuration, the plugin would be looked up in the Plexus container and be ready to perform any operations requested of it.

/**
 * Wraps an ordinary {@link URL} as a source.
 *
 */
public class UrlSource implements Source {

    private final URL url;

    private final int hashCode;

    /**
     * Creates a new source backed by the specified URL.
     *
     * @param url The file, must not be {@code null}.
     */
    public UrlSource(URL url) {
        this.url = Objects.requireNonNull(url, "url cannot be null");

import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;

import org.apache.maven.api.SessionData;
import org.apache.maven.api.services.MessageBuilderFactory;
import org.apache.maven.artifact.Artifact;

 * This API does not try to cover all the requirements out there, just the basic ones, and is intentionally simple.
 * If plugin or extension needs anything more complex feature wise (i.e. HTTP range support or alike) it should
 * probably roll its own.
 * <p>

        public void setMirroredRepositories(List<ArtifactRepository> mirroredRepositories) {}

        public boolean isBlocked() {
            return false;
        }

        public void setBlocked(boolean blocked) {}
    }