.build();
        DefaultModelProblemCollector problems = new DefaultModelProblemCollector(new DefaultModelBuilderResult());
        try {
            Model model = readFileModel(request, problems);

            try {
                if (transformer != null && context != null) {
                    transformer.transform(context, model, pomFile);
                }

            throws ProjectBuildingException {
        try (BuildSession bs = new BuildSession(request, false)) {
            return bs.build(artifact, allowStubModel);
        }
    }

    @Override
    public List<ProjectBuildingResult> build(List<File> pomFiles, boolean recursive, ProjectBuildingRequest request)
            throws ProjectBuildingException {
        try (BuildSession bs = new BuildSession(request, true)) {

    }

    /* MNG-4005: postponed to 3.1
    public void testValidationErrorUponNonUniqueDependencyKey()
        throws Exception
    {
        try
        {
            buildPom( "unique-dependency-key/deps" );
            fail( "Non-unique dependency keys did not cause validation error" );
        }
        catch ( ProjectBuildingException e )
        {

        }

        return sb.toString();
    }

    /**
     * @since 2.0.9
     */
    @Override
    public MavenProject clone() {
        MavenProject clone;
        try {
            clone = (MavenProject) super.clone();
        } catch (CloneNotSupportedException e) {
            throw new UnsupportedOperationException(e);
        }

        clone.deepCopy(this);

        }

        @Override
        public Activation transformActivation(Activation target) {
            stk.push(new ActivationFrame("activation", Optional.of(target)));
            try {
                return super.transformActivation(target);
            } finally {
                stk.pop();
            }
        }

        @Override