在OWLAPI中，如何编写包含UTF-8编码的RDF/XML报头

import org.semanticweb.owlapi.apibinding.OWLManager;
import org.semanticweb.owlapi.model.*;
import org.semanticweb.owlapi.util.SimpleIRIMapper;

OWLOntologyManager manager = OWLManager.createOWLOntologyManager();

IRI ontologyIRI = IRI.create("http://example.com/ontology");

OWLOntology ontology = manager.createOntology(ontologyIRI);

OWLXMLOntologyFormat format = new OWLXMLOntologyFormat();
format.setCharset(StandardCharsets.UTF_8);

manager.saveOntology(ontology, format);

import org.semanticweb.owlapi.apibinding.OWLManager;
import org.semanticweb.owlapi.model.*;
import org.semanticweb.owlapi.util.SimpleIRIMapper;

import java.nio.charset.StandardCharsets;

public class Main {
    public static void main(String[] args) throws OWLOntologyCreationException, OWLOntologyStorageException {
        // 创建本体管理器
        OWLOntologyManager manager = OWLManager.createOWLOntologyManager();

        // 创建IRI对象
        IRI ontologyIRI = IRI.create("http://example.com/ontology");

        // 创建本体对象
        OWLOntology ontology = manager.createOntology(ontologyIRI);

        // 创建包含UTF-8编码的RDF/XML报头的配置对象
        OWLXMLOntologyFormat format = new OWLXMLOntologyFormat();
        format.setCharset(StandardCharsets.UTF_8);

        // 将配置对象应用于本体
        manager.saveOntology(ontology, format);
    }
}