code: @Override
      public Annotation convert(XBELAnnotation source) {
          if (source == null) return null;
  
          String refID = source.getRefID();
          String value = source.getValue();
  
          final AnnotationDefinition ad = CommonModelFactory.getInstance()
                  .createAnnotationDefinition(refID,
                          UNRESOLVED_ANNOTATION_DEFINITION_TYPE,
                          UNRESOLVED_ANNOTATION_DEFINITION_DESCRIPTION,
                          UNRESOLVED_ANNOTATION_DEFINITION_USAGE,
                          UNRESOLVED_ANNOTATION_DEFINITION_VALUE);
  
          // Destination type
          final Annotation dest = CommonModelFactory.getInstance()
                  .createAnnotation(value, ad);
          return dest;
      }
docs: {@inheritDoc}