import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.maven.api.model.Model;

/**
 * Holds all Models that are known to the reactor. This allows the project builder to resolve imported Models from the
 * reactor when building another project's effective model.
 *
 */
class ReactorModelPool {
    private final Map<GAKey, Set<Model>> modelsByGa = new ConcurrentHashMap<>();

         * to new fixed version, or by dropping plugin use from currently built project.
         * <p>
         * Note: if a reactor build contains a plugin (with issues) and later that built plugin is used in build,
         * it will be reported as "external". It is up to developer to correctly interpret output (GAV) of issues

        String version = model.getVersion();
        String modVersion = replaceCiFriendlyVersion(context, version);
        builder.version(modVersion);
    }

    //
    // Infer inner reactor dependencies version
    //
    void handleReactorDependencies(ModelTransformerContext context, Model model, Path pomFile, Model.Builder builder) {
        List<Dependency> newDeps = new ArrayList<>();

     */
    @Nonnull
    default String getId() {
        return getModel().getId();
    }

    /**
     * Returns a boolean indicating if the project is the top level project for
     * this reactor build.  The top level project may be different from the
     * {@code rootDirectory}, especially if a subtree of the project is being
     * built, either because Maven has been launched in a subdirectory or using

                                + "plugin extension which still needed to be built. This is not possible within the same "
                                + "reactor build. Another project collection strategy will be executed as result.",
                        System.lineSeparator());
                return Collections.emptyList();
            }

            throw e;
        }

 */
public interface Builder {
    //
    // Be nice to whittle this down to Session, maybe add task segments to the session. The session really is
    // the place to store reactor related information.
    //
    void build(
            MavenSession session,
            ReactorContext reactorContext,
            ProjectBuildList projectBuilds,
            List<TaskSegment> taskSegments,

    <artifactId>parent</artifactId>
    <version>1</version>
  </parent>

  <artifactId>consumer</artifactId>

  <name>Maven Integration Test :: MNG-3023 :: Consumer</name>
  <description>Test that reactor projects are included in dependency resolution.</description>

  <dependencies>
    <dependency>
      <groupId>org.apache.maven.its.mng3023</groupId>
      <artifactId>dependency</artifactId>
      <version>1</version>

        this.projectBuilds = projectBuilds;
    }

    public int getNumberOfBuilds() {
        return projectBuilds.size();
    }

    /**
     * Gets all the builds that have no reactor-dependencies
     *
     * @return A set of all the initial builds
     */
    public List<MavenProject> getRootSchedulableBuilds() {
        Set<MavenProject> result = new LinkedHashSet<>();

        logger.info(s);
    }

    public void debugReactorPlan(ProjectBuildList projectBuilds) {
        if (!logger.isDebugEnabled()) {
            return;
        }

        logger.debug("=== REACTOR BUILD PLAN ================================================");

        for (Iterator<ProjectSegment> it = projectBuilds.iterator(); it.hasNext(); ) {
            ProjectSegment projectBuild = it.next();

     */
    private String lifecyclePhase;

    /**
     * The executions to fork before this execution, indexed by the groupId:artifactId:version of the project on which
     * the forked execution are to be run and in reactor build order.
     */
    private Map<String, List<MojoExecution>> forkedExecutions = new LinkedHashMap<>();

    public MojoExecution(Plugin plugin, String goal, String executionId) {
        this.plugin = plugin;