}

    @Override
    public MavenExecutionRequest addServer(Server server) {
        Objects.requireNonNull(server, "server cannot be null");

        for (Server p : getServers()) {
            if (p.getId() != null && p.getId().equals(server.getId())) {
                return this;
            }
        }

        getServers().add(server);

        return this;
    }

    @Override