docs: public List<TopicRelationship> getTopicRelationships() {
          ArrayList<TopicRelationship> relationships = new ArrayList<TopicRelationship>(topicRelationships);
          for (final TargetRelationship relationship : topicTargetRelationships) {
              relationships.add(new TopicRelationship(relationship.getPrimaryRelationship(), (SpecTopic) relationship.getSecondaryRelationship(),
                      relationship.getType()));
          }
          return relationships;
      }