if (repositories != null) {
            Map<String, Server> serversById = new HashMap<>();

            if (servers != null) {
                for (Server server : servers) {
                    if (!serversById.containsKey(server.getId())) {
                        serversById.put(server.getId(), server);
                    }
                }

    @Test
    void testValidateUniqueServerId() throws Exception {
        Settings settings = new Settings();
        Server server1 = new Server();
        server1.setId("test");
        settings.addServer(server1);
        Server server2 = new Server();
        server2.setId("test");
        settings.addServer(server2);

        SimpleProblemCollector problems = new SimpleProblemCollector();

        request.setPluginGroups(settings.getPluginGroups());

        request.setLocalRepositoryPath(settings.getLocalRepository());

        for (Server server : settings.getServers()) {
            server = server.clone();

            request.addServer(server);
        }

        //  <proxies>
        //    <proxy>
        //      <active>true</active>
        //      <protocol>http</protocol>

  that is, if they require configuration of a server process, and
  subsequent testing in-container.

  Since we're only going to concern ourselves with states where localhost is
  still active, we only need to worry about this case when the server container
  is <<not>> installed on localhost. This allows the popular pattern of starting
  a server container in-JVM, running tests against it, and shutting it down.

            }
        }

        List<Server> servers = settings.getServers();

        if (servers != null) {
            Set<String> serverIds = new HashSet<>();

            for (int i = 0; i < servers.size(); i++) {
                Server server = servers.get(i);

                validateStringNotEmpty(problems, "servers.server[" + i + "].id", server.getId(), null);

                    .offline(false)
                    .proxies(List.of())
                    .usePluginRegistry(false)
                    .servers(settings.getServers().stream()
                            .map(s -> Server.newBuilder(s, true)
                                    .username(null)
                                    .passphrase(null)
                                    .privateKey(null)

    }

    public Mirror getMirror(ArtifactRepository repository, List<Mirror> mirrors) {
        return null;
    }

    public void injectAuthentication(List<ArtifactRepository> repositories, List<Server> servers) {}

    public void injectMirror(List<ArtifactRepository> repositories, List<Mirror> mirrors) {}

    public void injectProxy(List<ArtifactRepository> repositories, List<Proxy> proxies) {}

                List<Server> servers = request.getServers();

                if (servers != null) {
                    for (Server server : servers) {
                        if (id.equalsIgnoreCase(server.getId())) {
                            SettingsDecryptionResult result =
                                    settingsDecrypter.decrypt(new DefaultSettingsDecryptionRequest(server));

                .offline(request.isOffline())
                .proxies(request.getProxies().stream().map(Proxy::getDelegate).collect(Collectors.toList()))
                .servers(request.getServers().stream().map(Server::getDelegate).collect(Collectors.toList()))
                .mirrors(request.getMirrors().stream().map(Mirror::getDelegate).collect(Collectors.toList()))
                .profiles(request.getProfiles().stream()

     *
     * @param repositories The repositories into which to inject the authentication information, may be {@code null}.
     * @param servers The available servers, may be {@code null}.
     */
    void injectAuthentication(List<ArtifactRepository> repositories, List<Server> servers);

    void injectMirror(RepositorySystemSession session, List<ArtifactRepository> repositories);