import com.sun.xml.internal.bind.v2.schemagen.xmlschema.Occurs; //导入依赖的package包/类
protected Occurs addChild(ExplicitGroup sq, QName name, TypeInfo typeInfo) {
    LocalElement le = null;;
    QName type = model.getBindingContext().getTypeName(typeInfo);
    if (type != null) {
        le = sq.element();
        le._attribute("name", name.getLocalPart());
        le.type(type);
    } else {
        if (typeInfo.type instanceof Class) {
            try {
                QName elemName = model.getBindingContext().getElementName((Class)typeInfo.type);
                if (elemName.getLocalPart().equals("any") && elemName.getNamespaceURI().equals(XsdNs)) {
                    return sq.any();
                } else {
                    le = sq.element();
                    le.ref(elemName);
                }
            } catch (JAXBException je) {
                throw new WebServiceException(je.getMessage(), je);
            }
        }
    }
    return le;
}
 

import com.sun.xml.internal.bind.v2.schemagen.xmlschema.Occurs; //导入依赖的package包/类
/**
 * Convenience method to write occurrence constraints.
 */
protected final void writeOccurs(Occurs o, boolean isOptional, boolean repeated) {
    if(isOptional)
        o.minOccurs(0);
    if(repeated)
        o.maxOccurs("unbounded");
}