if (projects != null) {
                Map<String, Map<String, Map<String, MavenProject>>> map = new HashMap<>();
                projects.forEach(project -> map.computeIfAbsent(project.getGroupId(), k -> new HashMap<>())
                        .computeIfAbsent(project.getArtifactId(), k -> new HashMap<>())
                        .put(project.getVersion(), project));
                this.projects = map;
            } else {

import org.apache.maven.project.CycleDetectedException;
import org.apache.maven.project.DuplicateProjectException;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.ProjectBuildingException;
import org.apache.maven.project.collector.MultiModuleCollectionStrategy;
import org.apache.maven.project.collector.PomlessCollectionStrategy;
import org.apache.maven.project.collector.RequestPomCollectionStrategy;

    @Inject
    protected PlexusContainer container;

    @Inject
    protected RepositorySystem repositorySystem;

    @Inject
    protected MavenRepositorySystem mavenRepositorySystem;

    @Inject
    protected org.apache.maven.project.ProjectBuilder projectBuilder;

    protected abstract String getProjectsDirectory();

    protected PlexusContainer getContainer() {

    }

    @Override
    public List<Project> getProjects(List<MavenProject> projects) {
        return projects == null ? null : map(projects, this::getProject);
    }

    @Override
    public Project getProject(MavenProject project) {
        return project != null && project.getBasedir() != null
                ? allProjects.computeIfAbsent(project.getId(), id -> new DefaultProject(this, project))
                : null;
    }

        File f = getFileForClasspathResource(DIR + "project-with-scoped-dependencies.xml");

        MavenProject project = getProjectWithDependencies(f);

        Artifact artifact;

        assertNotNull(project, "Test project can't be null!");

        checkArtifactIdScope(project, "provided", "provided");
        checkArtifactIdScope(project, "test", "test");
        checkArtifactIdScope(project, "compile", "compile");

     * @param time The build time of the project in milliseconds.
     * @param cause The cause of the build failure, may be {@code null}.
     */
    public BuildFailure(MavenProject project, long time, Throwable cause) {
        this(project, Duration.ofMillis(time), cause);
    }

    /**
     * Creates a new build summary for the specified project.
     *
     * @param project The project being summarized, must not be {@code null}.

    /**
     * Builds a project descriptor from the specified POM file.
     *
     * @param projectFile The POM file to build the project from, must not be {@code null}.
     * @param request The project building request that holds further parameters, must not be {@code null}.
     * @return The result of the project building, never {@code null}.
     * @throws ProjectBuildingException If the project descriptor could not be successfully built.

            project.setArtifact(projectArtifact);

            // only set those on 2nd phase, ignore on 1st pass
            if (project.getFile() != null) {
                Build build = project.getBuild().getDelegate();
                List<org.apache.maven.api.model.Source> sources = build.getSources();

        this.mojoExecution = mojoExecution;
    }

    public PluginExecutionException(
            MojoExecution mojoExecution, MavenProject project, String message, Throwable cause) {
        super(mojoExecution.getMojoDescriptor(), project, message, cause);
        this.mojoExecution = mojoExecution;
    }

    public PluginExecutionException(MojoExecution mojoExecution, MavenProject project, Exception cause) {

            if (isBom) {
                return buildBom(session, project, src);
            } else {
                return buildPom(session, project, src);
            }
        } else {
            return buildNonPom(session, project, src);
        }
    }

    protected Model buildPom(RepositorySystemSession session, MavenProject project, ModelSource src)
            throws ModelBuilderException {