inputs.files(extension.getCssFiles())
                .withPropertyName("manual")
                .withPathSensitivity(PathSensitivity.RELATIVE);
            inputs.dir("src/main/resources")
                .withPropertyName("resources")
                .withPathSensitivity(PathSensitivity.RELATIVE);
            inputs.dir(extension.getUserManual().getSnippets())
                .withPropertyName("snippets")

    private static class InheritDocHandler implements JavadocTagHandler {
        private final CommentSource source;
        private final DocBookBuilder nodeStack;

        private InheritDocHandler(DocBookBuilder nodeStack, CommentSource source) {
            this.nodeStack = nodeStack;
            this.source = source;
        }

        @Override
        public boolean onJavadocTag(String tag, String value) {