code: public List<TargetRelationship> getTargetRelationships() {
          final List<TargetRelationship> relationships = new ArrayList<TargetRelationship>(levelRelationships);
          relationships.addAll(topicTargetRelationships);
          return relationships;
      }
docs: Gets the list of Target relationships.
  
  @return A List of TargetRelationship's or an empty array if none are found.