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
    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);

    public BulkRequestBuilder prepareBulk() {
        return client.prepareBulk();
    }

    @Override
    public ActionFuture<GetResponse> get(final GetRequest request) {
        return client.get(request);
    }

    @Override
    public void get(final GetRequest request, final ActionListener<GetResponse> listener) {
        client.get(request, listener);
    }

    @Override

     * @see MavenExecutionRequest#getRootDirectory()
     * @since 4.0.0
     */
    public Path getRootDirectory() {
        return request.getRootDirectory();
    }

    public MavenExecutionRequest getRequest() {
        return request;
    }

    public void setCurrentProject(MavenProject currentProject) {
        this.currentProject.set(currentProject);
    }

    public MavenProject getCurrentProject() {

    }

    @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());

            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());

            }
        }

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

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

    private void logStats(MavenSession session) {
        infoLine('-');

        long finish = System.currentTimeMillis();

        long time = finish - session.getRequest().getStartTime().getTime();

        String wallClock = session.getRequest().getDegreeOfConcurrency() > 1 ? " (Wall Clock)" : "";

        logger.info("Total time:  {}{}", formatDuration(time), wallClock);

             * based on the configured remote repos.
             */
            MavenSession session = legacySupport.getSession();
            if (session != null) {
                MavenExecutionRequest req = session.getRequest();
                if (req != null) {
                    request.setActiveProfileIds(req.getActiveProfiles());
                    request.setInactiveProfileIds(req.getInactiveProfiles());
                }
            }