public void metadataInstalling(RepositoryEvent event) {
        println("metadataInstalling", event.getMetadata() + " to " + event.getFile());
    }

    @Override
    public void metadataInvalid(RepositoryEvent event) {
        println("metadataInvalid", event.getMetadata().toString());
    }

    @Override
    public void metadataResolved(RepositoryEvent event) {

        dispatcher.onEvent(event);
        delegate.metadataInstalling(event);
    }

    @Override
    public void metadataInvalid(RepositoryEvent event) {
        dispatcher.onEvent(event);
        delegate.metadataInvalid(event);
    }

    @Override
    public void metadataResolved(RepositoryEvent event) {
        dispatcher.onEvent(event);

                logger.warn(e.getMessage(), e);
            } else {
                logger.warn(e.getMessage());
            }
        }
    }

    @Override
    public void metadataInvalid(RepositoryEvent event) {
        Exception exception = event.getException();

        Object metadata;
        if (event.getMetadata().getFile() != null) {
            metadata = event.getMetadata().getFile();