assertSame(mirrorA, mirrorSelector.getMirror(getRepo("a", "http://a.a"), mirrors));

        assertSame(mirrorB, mirrorSelector.getMirror(getRepo("b", "http://a.a"), mirrors));

        assertSame(mirrorC2, mirrorSelector.getMirror(getRepo("c", "http://c.c"), mirrors));

        assertSame(mirrorC, mirrorSelector.getMirror(getRepo("d", "http://d"), mirrors));

        if (repositories != null && mirrors != null) {
            for (ArtifactRepository repository : repositories) {
                Mirror mirror = getMirror(repository, mirrors);
                injectMirror(repository, mirror);
            }
        }
    }

    private Mirror getMirror(RepositorySystemSession session, ArtifactRepository repository) {
        if (session != null) {

                effectivePolicy.merge(policy);
            }
        }

        return effectivePolicy;
    }

    @Override
    public Mirror getMirror(ArtifactRepository repository, List<Mirror> mirrors) {
        return mirrorSelector.getMirror(repository, mirrors);
    }

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

    }

    @Override
    public List<ArtifactRepository> getEffectiveRepositories(List<ArtifactRepository> repositories) {
        return repositories;
    }

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

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

        Objects.requireNonNull(mirror, "mirror cannot be null");

        for (Mirror p : getMirrors()) {
            if (p.getId() != null && p.getId().equals(mirror.getId())) {
                return this;
            }
        }

        getMirrors().add(mirror);

        return this;
    }

    @Override
    public List<Profile> getProfiles() {

                    return registration;
                } else {
                    String errorMsg = response != null ? response.getError() : "Response was null";
                    throw new IOException("Witness registration failed: " + errorMsg);
                }

            } catch (Exception e) {

        //     <mirrorOf>*</mirrorOf>
        //     <url>http://repository.sonatype.org/content/groups/public</url>
        //   </mirror>
        // </mirrors>

        for (Mirror mirror : settings.getMirrors()) {
            request.addMirror(mirror);
        }

        for (Repository remoteRepository : settings.getRepositories()) {
            try {

        // Setup mock RPC response for failure
        WitnessRegisterResponse mockResponse = mock(WitnessRegisterResponse.class);
        when(mockResponse.isSuccess()).thenReturn(false);
        when(mockResponse.getError()).thenReturn("Registration failed");

        WitnessRpcClient mockRpc = mock(WitnessRpcClient.class);
        lenient().when(mockRpc.register(any(WitnessRegisterRequest.class))).thenReturn(mockResponse);

                    
                    return registration;
                } else {
                    throw new IOException("Witness registration failed: " + response.getError());
                }
                
            } catch (Exception e) {
                log.error("Failed to register for witness notifications", e);
                throw new RuntimeException(e);
            }

        injectSession1(request, session);

        if (session != null) {
            request.setServers(session.getRequest().getServers());
            request.setMirrors(session.getRequest().getMirrors());
            request.setProxies(session.getRequest().getProxies());
        }
    }

    @Override
    public void resolve(
            Artifact artifact,