// code below...
        translatedPrefixes.add("build.directory");
        translatedPrefixes.add("build.outputDirectory");
        translatedPrefixes.add("build.testOutputDirectory");
        translatedPrefixes.add("build.sourceDirectory");
        translatedPrefixes.add("build.testSourceDirectory");
        translatedPrefixes.add("build.scriptSourceDirectory");
        translatedPrefixes.add("reporting.outputDirectory");

        List<String> scopes = new ArrayList<>(2);
        if (scopeToCollect != null && !scopeToCollect.isEmpty()) {
            scopes.add(scopeToCollect);
        }
        if (scopeToResolve != null && !scopeToResolve.isEmpty()) {
            scopes.add(scopeToResolve);
        }

        if (scopes.isEmpty()) {
            return null;
        } else {

        if (file.isFile()) {
            result.setFile(file);
        }

        return result;
    }

    public void add(RepositorySystemSession session, LocalArtifactRegistration request) {
        // noop
    }

    public void add(RepositorySystemSession session, LocalMetadataRegistration request) {
        // noop
    }

        prerequisitesCheckers.forEach(c -> {
            try {
                c.accept(pluginDescriptor);
            } catch (IllegalStateException e) {
                prerequisiteExceptions.add(e);
            }
        });
        // aggregate all exceptions
        if (!prerequisiteExceptions.isEmpty()) {
            String messages = prerequisiteExceptions.stream()

        }

        private ArtifactSpec addDependency(ArtifactSpec dep) throws InvalidVersionSpecificationException {
            if (dep != null) {
                dependencies.add(dep.artifact);
            }
            return dep;
        }

        private ArtifactSpec addDependency(String id, String version, String scope, boolean optional)

                            defaultValue != null ? Collections.singletonMap("default-value", defaultValue) : null,
                            null,
                            null);
                    children.add(e);
                }
            }
        }

        XmlNodeImpl dom = new XmlNodeImpl("configuration", null, null, children, null);
        return new org.codehaus.plexus.util.xml.Xpp3Dom(dom);
    }

 * The session to install / deploy / resolve artifacts and dependencies.
 *
 * TODO: move the remote repositories in the requests (plugins will need to access this list somehow)
 * TODO: add request trace so that requests can be linked together and through the resolver
 * TODO: add a Request interface holding session + parent request
 *
 * @since 4.0.0
 */
@Experimental
@ThreadSafe
public interface Session {

    @Nonnull

            projects.add(project);
            if (includeModules) {
                for (String module : project.getModules()) {
                    File modulePom = new File(pom.getParentFile(), module);
                    if (modulePom.isDirectory()) {
                        modulePom = new File(modulePom, "pom.xml");
                    }

                Server server = servers.get(i);

                validateStringNotEmpty(problems, "servers.server[" + i + "].id", server.getId(), null);

                if (!serverIds.add(server.getId())) {
                    addViolation(
                            problems,
                            BuilderProblem.Severity.WARNING,
                            "servers.server.id",

            for (int i = 0, n = tgt.size(); i < n; i++) {
                indices.add(i);
            }
            for (int i = 0, n = src.size(); i < n; i++) {
                String s = src.get(i);
                if (!excludes.contains(s)) {
                    merged.add(s);
                    indices.add(~i);
                }
            }
            builder.modules(merged);