code: private AtlasEdge createInverseReference(AtlasAttribute inverseAttribute, AtlasStructType inverseAttributeType,
                                               AtlasVertex inverseVertex, AtlasVertex vertex) throws AtlasBaseException {
  
          String propertyName     = AtlasGraphUtilsV1.getQualifiedAttributePropertyKey(inverseAttributeType, inverseAttribute.getName());
          String inverseEdgeLabel = AtlasGraphUtilsV1.getEdgeLabel(propertyName);
          AtlasEdge ret;
  
          try {
              ret = graphHelper.getOrCreateEdge(inverseVertex, vertex, inverseEdgeLabel);
  
          } catch (RepositoryException e) {
              throw new AtlasBaseException(AtlasErrorCode.INTERNAL_ERROR, e);
          }
  
          return ret;
      }
docs: legacy method to create edges for inverse reference