return UNSAFE.compareAndSwapObject(future, LISTENERS_OFFSET, expect, update);
    }

    /** Performs a GAS operation on the {@link #listeners} field. */
    @Override
    Listener gasListeners(AbstractFuture<?> future, Listener update) {
      while (true) {
        Listener listener = future.listeners;
        if (update == listener) {

                            .source(modelSource)
                            .locationTracking(true)
                            .listener(listener)
                            .build();

                    if (pomFile != null) {
                        project.setRootDirectory(rootLocator.findRoot(pomFile.getParent()));
                    }