Minimal code to generate freeplane mm files

Test.java

import org.freeplane.features.map.IMapSelection;
import org.freeplane.features.map.MapModel;
import org.freeplane.features.map.NodeModel;
import org.freeplane.features.mode.Controller;
import org.freeplane.features.url.mindmapmode.MFileManager;
import org.freeplane.main.application.FreeplaneStarter;
import org.freeplane.main.headlessmode.FreeplaneHeadlessStarter;
import org.freeplane.main.headlessmode.HeadlessMapViewController;

import java.io.File;
import java.io.IOException;

// hack to prevent an unsupported method exception
class Stub extends HeadlessMapViewController {
    @Override
    public IMapSelection getMapSelection() {
        return null;
    }
}

public class Test {
    public static void main(String[] args) throws IOException {
        FreeplaneStarter s = new FreeplaneHeadlessStarter();

        Controller e = s.createController();
        e.setMapViewManager(new Stub());
        s.createModeControllers(e);

        MFileManager mFileManager = new MFileManager();

        MapModel map = new MapModel();
        map.setRoot(new NodeModel("hi", map));
      
        // load data from neo4j
        // create the freeplane model  

        mFileManager.writeToFile(map, new File("...tmp.."));
      
        // send the file content as a http response
    }
}