如何在JAXB中向文本元素添加属性？

import javax.xml.bind.annotation.*;

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class MyElement {
    @XmlAttribute
    private String attribute;

    private String value;

    // getter and setter methods
    public String getAttribute() {
        return attribute;
    }

    public void setAttribute(String attribute) {
        this.attribute = attribute;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }
}

import javax.xml.bind.*;

public class Main {
    public static void main(String[] args) throws JAXBException {
        MyElement element = new MyElement();
        element.setValue("Hello World");
        element.setAttribute("example");

        JAXBContext context = JAXBContext.newInstance(MyElement.class);
        Marshaller marshaller = context.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);

        marshaller.marshal(element, System.out);
    }
}

<MyElement attribute="example">
    <value>Hello World</value>
</MyElement>