docs: public void mergeRelationInformation(TDRelation relation) {
          if (relation.hasTags()) {
              addTags(relation.getTags());
          }
          if (getName() == null && relation.getName() != null) {
              setName(relation.getName());
          }
          if (getRef() == null && relation.getRef() != null) {
              setRef(relation.getRef());
          }
      }