public ClassRealm getRealm() {
            return realm;
        }

        public ExtensionDescriptor getDescriptor() {
            return descriptor;
        }

        public List<Artifact> getArtifacts() {
            return artifacts;
        }
    }

    Key createKey(List<Artifact> extensionArtifacts);

    CacheRecord get(Key key);

    CacheRecord put(

        assertEquals(pom0Basedir, project1.getParent().getBasedir());
        System.out.println("Project " + project1.getId() + " " + project1);
        Set set = project1.getArtifacts();
        assertNotNull(set, "No artifacts");
        assertFalse(set.isEmpty(), "No Artifacts");
        assertTrue(set.size() == 3, "Set size should be 3, is " + set.size());

        for (Object aSet : set) {

        field.set(reader, eventDispatcher);

        ArtifactDescriptorRequest request = new ArtifactDescriptorRequest();

        request.addRepository(newTestRepository());

        request.setArtifact(new DefaultArtifact("org.apache.maven.its", "dep-mng5459", "jar", "0.4.0-SNAPSHOT"));

        // execute
        reader.readArtifactDescriptor(session, request);

        // verify

    }

    public Artifact getPomArtifact() {
        return pomArtifact;
    }

    public Artifact getRelocatedArtifact() {
        return relocatedArtifact;
    }

    public Set<Artifact> getArtifacts() {
        return artifacts;
    }

    public List<ArtifactRepository> getResolutionRepositories() {
        return resolutionRepositories;
    }

    public Map<String, Artifact> getManagedVersions() {

        // marker interface for cache keys
    }

    /**
     * CacheRecord
     */
    class CacheRecord {

        private final List<Artifact> artifacts;

        public List<Artifact> getArtifacts() {
            return artifacts;
        }

        public PluginResolutionException getException() {
            return exception;
        }

        private final PluginResolutionException exception;

        MavenProject project1 = getProjectWithDependencies(pom1);

        assertEquals(pom0Basedir, project1.getParent().getBasedir());
        Set set = project1.getArtifacts();
        assertNotNull(set, "No artifacts");
        assertFalse(set.isEmpty(), "No Artifacts");

        for (Object aSet : set) {
            Artifact artifact = (Artifact) aSet;

        assertEquals(pom0Basedir, project1.getParent().getBasedir());
        System.out.println("Project " + project1.getId() + " " + project1);
        Set set = project1.getArtifacts();
        assertNotNull(set, "No artifacts");
        assertFalse(set.isEmpty(), "No Artifacts");
        Iterator iter = set.iterator();
        assertTrue(set.size() == 4, "Set size should be 4, is " + set.size());

        MavenProject project1 = getProjectWithDependencies(pom1);

        assertEquals(pom0Basedir, project1.getParent().getBasedir());
        Set set = project1.getArtifacts();
        assertNotNull(set, "No artifacts");
        assertFalse(set.isEmpty(), "No Artifacts");
        Iterator iter = set.iterator();
        assertTrue(set.size() == 4, "Set size should be 4, is " + set.size());

        }

        CacheRecord(LifecycleExecutionException exception) {
            this.artifacts = null;
            this.exception = exception;
        }

        public Set<Artifact> getArtifacts() {
            return artifacts;
        }

        public LifecycleExecutionException getException() {
            return exception;
        }
    }

    Key createKey(

        MavenProject project1 = getProjectWithDependencies(pom1);

        assertEquals(pom0Basedir, project1.getParent().getBasedir());
        Set set = project1.getArtifacts();
        assertNotNull(set, "No artifacts");
        assertFalse(set.isEmpty(), "No Artifacts");
        assertTrue(set.size() == 3, "Set size should be 3, is " + set.size());

        for (Object aSet : set) {