/**
     * Creates a derived session using the given local repository.
     *
     * @param localRepository the new local repository
     * @return the derived session
     * @throws NullPointerException if {@code localRepository} is null
     */
    @Nonnull
    Session withLocalRepository(@Nonnull LocalRepository localRepository);

    /**
     * Creates a derived session using the given remote repositories.
     *

        return ArtifactCoordinateFactoryRequest.builder()
                .session(nonNull(session, "session"))
                .coordinateString(nonNull(coordinateString, "coordinateString"))
                .build();
    }

    @Nonnull
    static ArtifactCoordinateFactoryRequest build(@Nonnull Session session, @Nonnull ArtifactCoordinate coordinate) {

    public void execute(final MavenSession session, final List<MojoExecution> mojoExecutions)
            throws LifecycleExecutionException {

        final DependencyContext dependencyContext = newDependencyContext(session, mojoExecutions);

        final PhaseRecorder phaseRecorder = new PhaseRecorder(session.getCurrentProject());

        mojosExecutionStrategy.get().execute(mojoExecutions, session, new MojoExecutionRunner() {

    }

    @NotThreadSafe
    class ToolchainsBuilderRequestBuilder {
        Session session;
        Source globalToolchainsSource;
        Source userToolchainsSource;

        public ToolchainsBuilderRequestBuilder session(Session session) {
            this.session = session;
            return this;
        }

    }

    private Project project(Artifact artifact) {
        return session.getService(ProjectBuilder.class)
                .build(ProjectBuilderRequest.builder()
                        .session(session)
                        .path(session.getPathForLocalArtifact(artifact))
                        .processPlugins(false)
                        .build())

    }

    class ArtifactDeployerRequestBuilder {
        Session session;
        RemoteRepository repository;
        Collection<Artifact> artifacts;
        int retryFailedDeploymentCount;

        ArtifactDeployerRequestBuilder() {}

        @Nonnull
        public ArtifactDeployerRequestBuilder session(Session session) {
            this.session = session;
            return this;
        }

        @Nonnull

     * @throws IllegalArgumentException if an argument is null or invalid
     *
     * @see DependencyCollector#collect(Session, Project)
     * @see DependencyCollector#collect(Session, DependencyCoordinate)
     * @see DependencyCollector#collect(Session, Artifact)
     */
    @Nonnull
    DependencyCollectorResult collect(@Nonnull DependencyCollectorRequest request);

    /**

        return cast(InternalSession.class, session.getData().get(InternalSession.class), "session");
    }

    static void associate(org.eclipse.aether.RepositorySystemSession rsession, Session session) {
        if (!rsession.getData().set(InternalSession.class, null, from(session))) {
            throw new IllegalStateException("A maven session is already associated with the repository session");

    @Nonnull
    List<Toolchain> getToolchains(@Nonnull Session session, String type, Map<String, String> requirements);

    /**
     *
     * @param session
     * @param type
     * @return the selected {@link Toolchain}
     * @throws ToolchainManagerException if an exception occurs
     */
    @Nonnull
    Optional<Toolchain> getToolchainFromBuildContext(@Nonnull Session session, String type)
            throws ToolchainManagerException;

    }

    @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