* <li>Information on how to use the artifact as a dependency: whether to add it to the classpath, whether to load its
 * dependencies transitively</li>
 * </ul>
 *
 */
public interface ArtifactHandler {
    @Deprecated
    String ROLE = ArtifactHandler.class.getName();

    /**
     * Returns the file name extension of the artifact;

    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <!-- *not* <scope>test</scope>; <scope>compile</scope> is right so that guava-testlib users get junit transitively. -->
      <version>${junit.version}</version>
    </dependency>
    <dependency>
      <!--
      Do not include Truth in non-test scope! Doing so creates a problematic dependency cycle.
      -->

import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * Verifies the version of a dependency listed in a parent's
 * dependencyManagement section is chosen over another version of the same
 * dependency, listed transitively.
 *
 */
@Deprecated
@SuppressWarnings("checkstyle:UnusedLocalVariable")
class ProjectInheritanceTest extends AbstractProjectInheritanceTestCase {

    void downstreamProjectsShouldBeCached(boolean transitive) {
        FilteredProjectDependencyGraph graph =
                new FilteredProjectDependencyGraph(projectDependencyGraph, List.of(aProject));

        when(projectDependencyGraph.getDownstreamProjects(bProject, transitive)).thenReturn(List.of(cProject));

        graph.getDownstreamProjects(bProject, transitive);
        graph.getDownstreamProjects(bProject, transitive);

        for (String id : sorter.getDependents(projectId)) {
            if (projectIds.add(id) && transitive) {
                getDownstreamProjects(id, projectIds, transitive);
            }
        }
    }

    @Override
    public List<MavenProject> getUpstreamProjects(MavenProject project, boolean transitive) {
        Objects.requireNonNull(project, "project cannot be null");

Guillaume Nodet <******@****.***> 1729859506 +0200

        checkArtifactIdScope(project, "default", "compile");

        // check all transitive deps of a test dependency are test, except test and provided which is skipped
        artifact = getArtifact(project, "maven-test-test", "scope-provided");
        assertNull(artifact, "Check no provided dependencies are transitive");
        artifact = getArtifact(project, "maven-test-test", "scope-test");

 */
@Experimental
public interface DependencyResolver extends Service {

    /**
     * Collects the transitive dependencies of some artifacts and builds a dependency graph for the given path scope.
     * Note that this operation is only concerned about determining the coordinates of the transitive dependencies and
     * does not actually resolve the artifact files.
     *

        Key key = new Key(project, transitive, false);
        // Do not use computeIfAbsent here, as the computation is recursive
        // and this is not supported by computeIfAbsent.
        List<MavenProject> list = cache.get(key);
        if (list == null) {
            list = applyFilter(projectDependencyGraph.getDownstreamProjects(project, transitive), transitive, false);

    public static DependencyScope forId(String id) {
        return IDS.get(id);
    }

    private final String id;
    private final boolean transitive;

    DependencyScope(String id, boolean transitive) {
        this.id = id;
        this.transitive = transitive;
    }

    /**
     * The {@code id} uniquely represents a value for this extensible enum.