String makeBehavior = request.getMakeBehavior();
        boolean makeBoth = MavenExecutionRequest.REACTOR_MAKE_BOTH.equals(makeBehavior);

        boolean makeUpstream = makeBoth || MavenExecutionRequest.REACTOR_MAKE_UPSTREAM.equals(makeBehavior);
        boolean makeDownstream = makeBoth || MavenExecutionRequest.REACTOR_MAKE_DOWNSTREAM.equals(makeBehavior);

    /**
     * Gets the upstream projects of the specified project. An upstream project is a project that directly or indirectly
     * is a prerequisite of the given project.
     *
     * @param project The project whose upstream projects should be retrieved, must not be {@code null}.
     * @param transitive A flag whether to retrieve all direct and indirect upstream projects or just the immediate

import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import org.apache.maven.api.Lifecycle;
import org.apache.maven.api.services.LifecycleRegistry;
import org.apache.maven.api.spi.LifecycleProvider;

import static java.util.Arrays.asList;

            lifecycleRegistry.stream()
                    .filter(lf -> !plugins.containsKey(lf.id()))
                    .forEach(lf -> plugins.put(
                            lf.id(),
                            PluginContainer.newBuilder()
                                    .plugins(lf.phases().stream()
                                            .flatMap(phase -> phase.plugins().stream())

        return new ProjectBuildList(
                items.stream().filter(pb -> taskSegment == pb.getTaskSegment()).collect(Collectors.toList()));
    }

    public Map<MavenProject, ProjectSegment> selectSegment(TaskSegment taskSegment) {
        return items.stream()
                .filter(pb -> taskSegment == pb.getTaskSegment())

import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicReference;
import java.util.stream.Collectors;

import org.apache.maven.api.ArtifactCoordinate;
import org.apache.maven.api.Session;
import org.apache.maven.api.Version;
import org.apache.maven.api.annotations.Nonnull;

    public DefaultTypeRegistry(
            List<TypeProvider> providers, LanguageRegistry languageRegistry, LegacyArtifactHandlerManager manager) {
        this.types = nonNull(providers, "providers").stream()
                .flatMap(p -> p.provides().stream())
                .collect(Collectors.toMap(Type::id, identity()));
        this.languageRegistry = nonNull(languageRegistry, "languageRegistry");
        this.usedTypes = new ConcurrentHashMap<>();

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.project;

import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.List;

import java.io.IOException;
import java.nio.file.Path;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.function.Predicate;
import java.util.stream.Collectors;

import org.apache.maven.api.*;
import org.apache.maven.api.Artifact;
import org.apache.maven.api.ArtifactCoordinate;
import org.apache.maven.api.Dependency;
import org.apache.maven.api.Node;

package org.apache.maven.lifecycle;

import javax.inject.Inject;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import org.apache.maven.internal.impl.DefaultLifecycleRegistry;
import org.apache.maven.internal.impl.DefaultLookup;
import org.codehaus.plexus.PlexusContainer;