String value = (String) field.get(target);
                                    if (value != null) {
                                        String interpolated = modelInterpolator.interpolateInternal(
                                                value, valueSources, postProcessors, debugEnabled);

                                        if (!interpolated.equals(value)) {

            List<ValueSource> valueSources = createValueSources(model, projectDir, config);
            List<InterpolationPostProcessor> postProcessors = createPostProcessors(model, projectDir, config);

            return interpolateInternal(src, valueSources, postProcessors, debug);
        } finally {
            interpolator.clearAnswers();
        }
    }

    protected List<ValueSource> createValueSources(