MavenExecutionRequest request)
            throws MavenExecutionException {
        List<MavenProject> result = projects;

        ProjectActivation projectActivation = request.getProjectActivation();

        Set<String> requiredSelectors = projectActivation.getRequiredActiveProjectSelectors();
        Set<String> optionalSelectors = projectActivation.getOptionalActiveProjectSelectors();

    String getReactorFailureBehavior();

    /**
     * @deprecated Since Maven 4: use {@link #getProjectActivation()}.
     */
    @Deprecated
    MavenExecutionRequest setSelectedProjects(List<String> projects);

    /**
     * @deprecated Since Maven 4: use {@link #getProjectActivation()}.
     */
    @Deprecated
    List<String> getSelectedProjects();

    /**

        properties.setProperty("remainingProjects", ":module-a");

        repository.applyResumptionProperties(request, properties);

        assertEquals(singleton(":module-a"), request.getProjectActivation().getOptionalActiveProjectSelectors());
    }

    @Test
    void resumeFromPropertyDoesNotOverrideExistingRequestParameters() {
        MavenExecutionRequest request = new DefaultMavenExecutionRequest();

            Stream.of(propertyValue.split(PROPERTY_DELIMITER))
                    .filter(str -> !str.isEmpty())
                    .forEach(request.getProjectActivation()::activateOptionalProjectNonRecursive);
            LOGGER.info("Resuming from {} due to the --resume / -r feature.", propertyValue);
        }
    }

            throws ProjectBuildingException {
        ProjectBuildingRequest projectBuildingRequest = request.getProjectBuildingRequest();

        boolean hasProjectSelection = !request.getProjectActivation().isEmpty();
        boolean isRecursive = hasProjectSelection || request.isRecursive();
        List<ProjectBuildingResult> results = projectBuilder.build(files, isRecursive, projectBuildingRequest);

        parameterInactiveOptionalProjects.forEach(projectActivation::deactivateOptionalProject);

        when(mavenExecutionRequest.getRootDirectory()).thenReturn(Paths.get("."));
        when(mavenExecutionRequest.getProjectActivation()).thenReturn(projectActivation);
        when(mavenExecutionRequest.getMakeBehavior()).thenReturn(parameterMakeBehavior);
        when(mavenExecutionRequest.getPom()).thenReturn(parameterRequestedPom);

            this.profileActivation.overwriteInactiveProfiles(inactiveProfiles);
        }

        return this;
    }

    @Override
    public ProjectActivation getProjectActivation() {
        return this.projectActivation;
    }

    @Override
    public ProfileActivation getProfileActivation() {
        return this.profileActivation;
    }

    @Override

        }

        request.setIgnoreTransitiveRepositories(
                context.options().ignoreTransitiveRepositories().orElse(false));

        performProjectActivation(context, request.getProjectActivation());
        performProfileActivation(context, request.getProfileActivation());

        //
        // Builder, concurrency and parallelism
        //

     * @param session the {@link MavenSession}.
     */
    private void validateOptionalProjects(MavenExecutionRequest request, MavenSession session) {
        final ProjectActivation projectActivation = request.getProjectActivation();
        final Set<String> allOptionalSelectors = new HashSet<>();
        allOptionalSelectors.addAll(projectActivation.getOptionalActiveProjectSelectors());

        }
        enableOnPresentOption(
                commandLine, CLIManager.IGNORE_TRANSITIVE_REPOSITORIES, request::setIgnoreTransitiveRepositories);

        performProjectActivation(commandLine, request.getProjectActivation());
        performProfileActivation(commandLine, request.getProfileActivation());

        final String localRepositoryPath = determineLocalRepositoryPath(request);
        if (localRepositoryPath != null) {