import com.sun.xml.internal.bind.InternalAccessorFactory; //导入依赖的package包/类
@Override
protected RuntimePropertySeed createFieldSeed(Field field) {
   final boolean readOnly = Modifier.isStatic(field.getModifiers());
    Accessor acc;
    try {
        if (supressAccessorWarnings) {
            acc = ((InternalAccessorFactory)accessorFactory).createFieldAccessor(clazz, field, readOnly, supressAccessorWarnings);
        } else {
            acc = accessorFactory.createFieldAccessor(clazz, field, readOnly);
        }
    } catch(JAXBException e) {
        builder.reportError(new IllegalAnnotationException(
                Messages.CUSTOM_ACCESSORFACTORY_FIELD_ERROR.format(
                nav().getClassName(clazz), e.toString()), this ));
        acc = Accessor.getErrorInstance(); // error recovery
    }
    return new RuntimePropertySeed(super.createFieldSeed(field), acc );
}