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();

    public static final String PROXY_HTTP = "HTTP";

    /**
     * Proxy server host
     */
    private String host;

    /**
     * Username used to access the proxy server
     */
    private String userName;

    /**
     * Password associated with the proxy server
     */
    private String password;

    /**
     * Proxy server port
     */
    private int port;

    /**

        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.

    pragmatic software license, and a desire to create high quality software that leads the way in its field.
    We consider ourselves not simply a group of projects sharing a server, but rather a community of developers
    and users.
  </description>
  <licenses>
    <license>
      <name>The Apache Software License, Version 2.0</name>
      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>

    pragmatic software license, and a desire to create high quality software that leads the way in its field.
    We consider ourselves not simply a group of projects sharing a server, but rather a community of developers
    and users.
  </description>
  <licenses>
    <license>
      <name>The Apache Software License, Version 2.0</name>
      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>

                    .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) {}

            // of the form:
            //
            // mvn remote-resources:process
            //
            // From the metadata stored on the server which has been created as part of a standard
            // Maven plugin deployment we will find the right PluginDescriptor from the remote
            // repository.