}

    private InputSource getSource(Map<String, ?> options) {
        Object value = (options != null) ? options.get(INPUT_SOURCE) : null;
        return (InputSource) value;
    }

    private Path getRootDirectory(Map<String, ?> options) {
        Object value = (options != null) ? options.get(ROOT_DIRECTORY) : null;
        return (Path) value;
    }

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

    /**
     * @since 3.3.0
     * @deprecated use {@link #getRootDirectory()} instead
     */
    @Deprecated
    File getMultiModuleProjectDirectory();

    /**
     * Sets the top directory of the project.
     *
     * @since 4.0.0
     */

                        }
                    }
                }
            }

            private void doLoadFullReactor() {
                Path rootDirectory = request.getRootDirectory();
                if (rootDirectory == null) {
                    return;
                }
                List<Path> toLoad = new ArrayList<>();

                    break;
            }
        }
        return packaged;
    }

    private Path relativizeOutputFile(final Path outputFile) {
        Path rootDirectory = session.getRequest().getRootDirectory();
        return rootDirectory.relativize(outputFile);
    }

    /**
     * Tries to resolve the specified artifact from the artifacts of the given project.
     *

     * @throws IllegalStateException if the root directory could not be found
     * @see #getTopDirectory()
     * @see Project#getRootDirectory()
     * @see Project#isRootProject()
     */
    @Nonnull
    Path getRootDirectory();

    /**
     * Retrieves a list of projects associated with the session.
     *
     * @return a list of projects, never {@code null}
     */
    @Nonnull

    public Instant getStartTime() {
        return startTime;
    }

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

    @Override
    public Path getRootDirectory() {
        throw new IllegalStateException();
    }

    @Override
    public List<Project> getProjects() {
        return List.of();
    }

    @Override

    TransformerContextBuilder getTransformerContextBuilder();

    ModelBuildingRequest setTransformerContextBuilder(TransformerContextBuilder contextBuilder);

    Path getRootDirectory();

    ModelBuildingRequest setRootDirectory(Path rootDirectory);

                return null;
            }

            if (importSource instanceof FileModelSource && request.getRootDirectory() != null) {
                Path sourcePath = ((FileModelSource) importSource).getPath();
                if (sourcePath.startsWith(request.getRootDirectory())) {
                    problems.add(new ModelProblemCollectorRequest(Severity.WARNING, ModelProblem.Version.BASE)

    }

    @Deprecated
    @Override
    public File getMultiModuleProjectDirectory() {
        return multiModuleProjectDirectory;
    }

    @Override
    public Path getRootDirectory() {
        if (rootDirectory == null) {
            throw new IllegalStateException(RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE);
        }
        return rootDirectory;
    }

    @Override