task.getDestinationDirectory().convention(layout.getBuildDirectory().dir("tmp/" + task.getName()));
        });

        TaskProvider<Sync> userguideFlattenSources = tasks.register("stageUserguideSource", Sync.class, task -> {
            task.setDuplicatesStrategy(DuplicatesStrategy.FAIL);

            // TODO: This doesn't allow adoc files to be generated?