assertNull(negotiationAllNull.getRequest());
        assertNull(negotiationAllNull.getResponse());
        assertNull(negotiationAllNull.getRequestRaw());
        assertNull(negotiationAllNull.getResponseRaw());
    }

    @Test
    @DisplayName("getRequest should return the same request instance")
    void testGetRequest() {
        // Verify getRequest returns the exact same instance

    }

    @Test
    void testNoModels() {
        MavenSession session = mock(MavenSession.class);
        MavenExecutionRequest executionRequest = new DefaultMavenExecutionRequest();
        when(session.getRequest()).thenReturn(executionRequest);

        List<Toolchain> toolchains = toolchainManager.getToolchains(session, "unknown", null);

        assertEquals(0, toolchains.size());
    }

    @Test

        activeProjects =
                trimSelectedProjects(activeProjects, allSortedProjects, projectDependencyGraph, session.getRequest());
        activeProjects = trimResumedProjects(activeProjects, projectDependencyGraph, session.getRequest());
        activeProjects = trimExcludedProjects(activeProjects, projectDependencyGraph, session.getRequest());

        MavenSession mavenSession = createSession(container, repo, executionProperties);
        mavenSession.setCurrentProject(project);
        mavenSession.getRequest().setRootDirectory(rootDirectory);
        mavenSession.getRequest().setTopDirectory(rootDirectory);

        DefaultSession session = new DefaultSession(

    public void testUri() throws Exception {
        Path path = Paths.get("").toAbsolutePath();

        MavenSession mavenSession = createMavenSession(null);
        mavenSession.getRequest().setTopDirectory(path);
        mavenSession.getRequest().setRootDirectory(path);

        Object result = new PluginParameterExpressionEvaluator(mavenSession, new MojoExecution(null))
                .evaluate("${session.rootDirectory.uri}");

    @Test
    public void test_FactoryMethodsWithEmptyUrl() {
        // ## Test factory methods with empty URL ##

        // ## Act ##
        final String emptyUrl = "";
        final CurlRequest getRequest = Curl.get(emptyUrl);
        final CurlRequest postRequest = Curl.post(emptyUrl);
        final CurlRequest putRequest = Curl.put(emptyUrl);
        final CurlRequest deleteRequest = Curl.delete(emptyUrl);

            request.setForceUpdate(session.getRequest().isUpdateSnapshots());
        }
    }

    private void injectSession2(ArtifactResolutionRequest request, MavenSession session) {
        injectSession1(request, session);

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

                }
                if (headObject.contentLength() < maxCachedContentSize) {
                    final GetObjectRequest getRequest = GetObjectRequest.builder().bucket(bucketName).key(path).build();
                    try (InputStream contentStream = new BufferedInputStream(awsS3Client.getObject(getRequest))) {
                        responseData.setResponseBody(InputStreamUtil.getBytes(contentStream));

            }
        }

        for (MetadataResult metadataResult : metadataResults) {
            result.addException(metadataResult.getException());

            ArtifactRepository repository = metadataResult.getRequest().getRepository();
            if (repository == null) {
                repository = session.getLocalRepository();
            }

        for (MetadataResult res : results) {
            org.eclipse.aether.metadata.Metadata metadata = res.getMetadata();

            if (metadata != null) {
                ArtifactRepository repository = res.getRequest().getRepository();
                if (repository == null) {
                    repository = request.getRepositorySession().getLocalRepository();
                }

                PluginPrefixResult result =