String src, Model model, final File projectDir, ProjectBuilderConfiguration config, boolean debug)
            throws ModelInterpolationException {
        try {
            List<ValueSource> valueSources = createValueSources(model, projectDir, config);
            List<InterpolationPostProcessor> postProcessors = createPostProcessors(model, projectDir, config);

            return interpolateInternal(src, valueSources, postProcessors, debug);

            Object obj, Model model, File projectDir, ProjectBuilderConfiguration config, boolean debugEnabled)
            throws ModelInterpolationException {
        try {
            List<ValueSource> valueSources = createValueSources(model, projectDir, config);
            List<InterpolationPostProcessor> postProcessors = createPostProcessors(model, projectDir, config);

            InterpolateObjectAction action =

    }

    @Override
    public Model interpolateModel(
            Model model, Path projectDir, ModelBuildingRequest config, ModelProblemCollector problems) {
        List<? extends ValueSource> valueSources = createValueSources(model, projectDir, config, problems);
        List<? extends InterpolationPostProcessor> postProcessors = createPostProcessors(model, projectDir, config);

        return config.getValidationLevel() >= ModelBuildingRequest.VALIDATION_LEVEL_MAVEN_4_0
                ? PROJECT_PREFIXES_4_0
                : PROJECT_PREFIXES_3_1;
    }

    protected List<ValueSource> createValueSources(
            final Model model,
            final Path projectDir,
            final ModelBuildingRequest config,
            ModelProblemCollector problems) {