}

    @Override
    public List<Server> getServers() {
        if (servers == null) {
            servers = new ArrayList<>();
        }
        return servers;
    }

    @Override
    public MavenExecutionRequest setServers(List<Server> servers) {
        if (servers != null) {
            this.servers = new ArrayList<>(servers);
        } else {
            this.servers = null;