setModelCache(request.getModelCache());
        setWorkspaceModelResolver(request.getWorkspaceModelResolver());
        setTransformerContextBuilder(request.getTransformerContextBuilder());
        setRootDirectory(request.getRootDirectory());
    }

    @Deprecated
    @Override
    public File getPomFile() {
        return pomPath != null ? pomPath.toFile() : null;
    }

    @Override

     * @since 3.3.0
     */
    Map<String, List<ToolchainModel>> getToolchains();

    /**
     * @since 3.3.0
     * @deprecated use {@link #setRootDirectory(Path)} instead
     */
    @Deprecated
    void setMultiModuleProjectDirectory(File file);

    /**
     * @since 3.3.0
     * @deprecated use {@link #getRootDirectory()} instead
     */

            // maven requires this to be set; so default it (and see below at POM)
            request.setMultiModuleProjectDirectory(
                    context.invokerRequest.topDirectory().toFile());
            request.setRootDirectory(context.invokerRequest.topDirectory());
        }

        MavenOptions options = context.invokerRequest.options();
        request.setNoSnapshotUpdates(options.suppressSnapshotUpdates().orElse(false));

            throw new IllegalStateException(RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE);
        }
        return rootDirectory;
    }

    @Override
    public MavenExecutionRequest setRootDirectory(Path rootDirectory) {
        this.rootDirectory = rootDirectory;
        return this;
    }

    @Override
    public Path getTopDirectory() {
        return topDirectory;
    }

    ModelBuildingRequest setTransformerContextBuilder(TransformerContextBuilder contextBuilder);

    Path getRootDirectory();

    ModelBuildingRequest setRootDirectory(Path rootDirectory);

        if (context.invokerRequest.rootDirectory().isPresent()) {
            request.setMultiModuleProjectDirectory(
                    context.invokerRequest.rootDirectory().get().toFile());
            request.setRootDirectory(context.invokerRequest.rootDirectory().get());
        }

        request.addPluginGroup("org.apache.maven.plugins");
        request.addPluginGroup("org.codehaus.mojo");
    }

    /**