boolean deleteGroupById(String groupURL) {
   String cypher = CypherQueryBuilder.deleteGroupById();
   Map<String, Object> params = CypherParamBuilder.deleteGroupById(groupURL);
   CypherQuery q = new CypherQueryWithParameters(cypher, params);
   JsonNode jsonNode = executeCypherQueryAndCommit(q);
   JsonNode errorsNode = jsonNode.at("/errors");
   if (errorsNode.size() != 0) {
     JsonNode error = errorsNode.path(0);
     log.warn("Error while deleting group:", error);
   }
   return errorsNode.size() == 0;
 }