public void export(Project project, Properties options, Engine engine,
Writer writer) throws IOException {
Protograph protograph = (Protograph) project.overlayModels.get("freebaseProtograph");
if (protograph != null) {
TransposedNodeFactory nodeFactory = createNodeFactory(project, writer);
Transposer.transpose(project, engine.getAllFilteredRows(),
protograph, protograph.getRootNode(0), nodeFactory, -1);
nodeFactory.flush();
}
}