request.addRepository(newTestRepository());

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

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

        // verify
        verify(eventDispatcher).dispatch(event.capture());

        boolean missingArtifactDescriptor = false;

        for (RepositoryEvent evt : event.getAllValues()) {

                    new ArtifactDescriptorRequest(pluginArtifact, repositories, REPOSITORY_CONTEXT);
            request.setTrace(trace);
            ArtifactDescriptorResult result = repoSystem.readArtifactDescriptor(pluginSession, request);

            for (MavenPluginDependenciesValidator dependenciesValidator : dependenciesValidators) {
                dependenciesValidator.validate(session, pluginArtifact, result);

        ArtifactDescriptorRequest request = new ArtifactDescriptorRequest();
        request.setArtifact(artifact);
        request.addRepository(newTestRepository());

        ArtifactDescriptorResult result = system.readArtifactDescriptor(session, request);

        List<Dependency> deps = result.getDependencies();
        assertEquals(2, deps.size());
        checkUtSimpleArtifactDependencies(deps.get(0), deps.get(1));
    }

    /**

        this.delegate = new ArtifactDescriptorReaderDelegate();
    }

    @Override
    public ArtifactDescriptorResult readArtifactDescriptor(
            RepositorySystemSession session, ArtifactDescriptorRequest request) throws ArtifactDescriptorException {
        ArtifactDescriptorResult result = new ArtifactDescriptorResult(request);

        this.delegate = new ArtifactDescriptorReaderDelegate();
    }

    @Override
    public ArtifactDescriptorResult readArtifactDescriptor(
            RepositorySystemSession session, ArtifactDescriptorRequest request) throws ArtifactDescriptorException {
        ArtifactDescriptorResult result = new ArtifactDescriptorResult(request);