// whether we are working on a transitive dependency or not. This
        // allows depMgmt to always override transitive dependencies, while
        // explicit child override depMgmt (viz. depMgmt should only
        // provide defaults to children, but should override transitives).
        // We can do this by calling isChildOfRootNode on the current node.

    //
    // or we can show it graphically as:
    //
    // p1 ---> p0 --> super model
    //
    // p1 has a depMgmt section that specifies versions 1.0 of jars "a" & "b"
    // jar "a" has a transitive dependency on 2.0 of jar "b", but maven should
    // prefer to use version 1.0.
    //
    // ----------------------------------------------------------------------

    @Test

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

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

        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");

        return applyFilter(projectDependencyGraph.getDownstreamProjects(project, transitive), transitive, false);
    }

    @Override
    public List<MavenProject> getUpstreamProjects(MavenProject project, boolean transitive) {
        return applyFilter(projectDependencyGraph.getUpstreamProjects(project, transitive), transitive, true);
    }

    /**

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

    /**
     * Resolves the transitive dependencies of the specified project.
     *
     * @param project         The project whose dependencies should be resolved, must not be {@code null}.
     * @param scopesToResolve The dependency scopes that should be resolved, may be {@code null}.
     * @param session         The current build session, must not be {@code null}.

 */
@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.
     *

     * @param transitive A flag whether to retrieve all direct and indirect downstream projects or just the immediate
     *            downstream projects.
     * @return The downstream projects in the build order, never {@code null}.
     */
    List<MavenProject> getDownstreamProjects(MavenProject project, boolean transitive);

    /**

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