code: private static void parseXmlAnnotations(Outline outline, FieldOutline field, Set<String> directClasses) throws IllegalAccessException {
          if (field instanceof UntypedListField) {
              JFieldVar jfv = (JFieldVar) FieldHack.listField.get(field);
              for(JAnnotationUse jau : jfv.annotations()) {
                  JClass jc = jau.getAnnotationClass();
                  if (jc.fullName().equals(XmlElements.class.getName())) {
                      JAnnotationArrayMember value = (JAnnotationArrayMember) jau.getAnnotationMembers().get("value");
                      for(JAnnotationUse anno : value.annotations()) {
                          handleXmlElement(outline, directClasses, anno.getAnnotationMembers().get("type"));
                      }
                  }
              }
          }
      }
docs: Parse the annotations on the field to see if there is an XmlElements
  annotation on it. If so, we'll check this annotation to see if it
  refers to any classes that are external from our code schema compile.
  If we find any, then we'll add them to our visitor.
  @param outline root of the generated code
  @param field parses the xml annotations looking for an external class
  @param directClasses set of direct classes to append to
  @throws IllegalAccessException throw if there's an error introspecting the annotations