RepositorySystemSession getRepositorySession();

    ProjectBuildingRequest setRepositorySession(RepositorySystemSession repositorySession);

    /**
     * Sets the merge mode used to combine repositories declared in the POM with the repositories specified in this
     * request.
     *
     * @param mode The repository merge mode, must not be {@code null}.

    String SELF_COMBINATION_MODE_ATTRIBUTE = "combine.self";

    String SELF_COMBINATION_OVERRIDE = "override";

    String SELF_COMBINATION_MERGE = "merge";

    String SELF_COMBINATION_REMOVE = "remove";

    /**
     * In case of complex XML structures, combining can be done based on id.
     */
    String ID_COMBINATION_MODE_ATTRIBUTE = "combine.id";

    /**

        this.scopes = new HashSet<>();

        addScopes(scopes);
    }

    /**
     * Creates a new filter that combines the specified filters.
     *
     * @param filters The filters to combine, may be {@code null}.
     */
    public CumulativeScopeArtifactFilter(CumulativeScopeArtifactFilter... filters) {
        this.scopes = new HashSet<>();

    public static final String RS_MAIN_COMPILE = "main-compile";
    public static final String RS_MAIN_COMPILE_PLUS_RUNTIME = "main-compilePlusRuntime";
    public static final String RS_MAIN_RUNTIME = "main-runtime";
    public static final String RS_MAIN_RUNTIME_PLUS_SYSTEM = "main-runtimePlusSystem";
    public static final String RS_TEST_COMPILE = "test-compile";
    public static final String RS_TEST_RUNTIME = "test-runtime";

    Set<DependencyScope> dependencyScopes();

    PathScope MAIN_COMPILE = pathScope(
            "main-compile",
            ProjectScope.MAIN,
            DependencyScope.COMPILE_ONLY,
            DependencyScope.COMPILE,
            DependencyScope.PROVIDED);

    PathScope MAIN_RUNTIME =
            pathScope("main-runtime", ProjectScope.MAIN, DependencyScope.COMPILE, DependencyScope.RUNTIME);

    PathScope TEST_COMPILE = pathScope(

     * will default to {@link #COMPILE}.
     */
    UNDEFINED("", false),

    /**
     * Compile only.
     */
    COMPILE_ONLY("compile-only", false),

    /**
     * Compile, runtime and test.
     */
    COMPILE("compile", true),

    /**
     * Runtime and test.
     */
    RUNTIME("runtime", true),

    /**

        "compile", "org.apache.maven.plugins:maven-compiler-plugin:" + COMPILER_PLUGIN_VERSION + ":compile",
        "process-test-resources",
                "org.apache.maven.plugins:maven-resources-plugin:" + RESOURCES_PLUGIN_VERSION + ":testResources",
        "test-compile", "org.apache.maven.plugins:maven-compiler-plugin:" + COMPILER_PLUGIN_VERSION + ":testCompile",

        assertNotNull( artifact, "dependency artifact not found in map." );
        assertEquals( Artifact.SCOPE_COMPILE, artifact.getScope(), "dependency artifact has wrong scope." );

        //check for back-propagation of default scope.
        assertEquals( Artifact.SCOPE_COMPILE, dep.getScope(), "default scope NOT back-propagated to dependency." );
        */
    }

    @Test
    @Disabled

    }

    /**
     * Performs a lookup using Plexus API to make sure we can look up only "visible" (see Maven classloading) components
     * from current module and for example not extensions coming from other modules.
     */
    private LifecycleMapping lookupLifecycleMapping(final String packaging) {
        return lookup.lookupOptional(LifecycleMapping.class, packaging).orElse(null);
    }

    public static final String DS_COMPILE = "compile";
    public static final String DS_RUNTIME = "runtime";
    public static final String DS_PROVIDED = "provided";
    public static final String DS_SYSTEM = "system";
    public static final String DS_TEST = "test";
    public static final String RS_NONE = "none";
    public static final String RS_MAIN_COMPILE = "main-compile";