}

    @Test
    void getRequiredProjectsBySelectorsReturnsProjectWithChildProjects() throws MavenExecutionException {
        when(mavenExecutionRequest.isRecursive()).thenReturn(true);

        final HashSet<String> selectors = new HashSet<>();
        selectors.add(":maven-core");

        final MavenProject mavenProject = createMavenProject("maven-core");

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

        List<MavenProject> projects = new ArrayList<>(results.size());

        long totalProblemsCount = 0;

    }

    private List<MavenProject> getChildProjects(MavenProject parent, MavenExecutionRequest request) {
        final List<MavenProject> children = parent.getCollectedProjects();
        if (children != null && request.isRecursive()) {
            return children;
        } else {
            return new ArrayList<>();
        }
    }

    private Optional<MavenProject> findOptionalProjectBySelector(