code: @Override
      public void commit(DBTransaction dbTran) {
          assert dbTran.getTenant().getName().equals(this.getTenant().getName());
          DBConn dbConn = getDBConnection();
          try {
              dbConn.commit(dbTran);
          } finally {
              returnDBConnection(dbConn);
          }
      }
docs: ----- Public DBService methods: Updates