code: private QueryBuilderKraken parseWatch()
    {
      WatchQueryBuilder query
        = new WatchQueryBuilder(_tableManager, _sql);
      
      Token token;
      
      String tableName = parseTableName();
  
      query.setTableName(tableName);
      
      _query = query;
  
      ExprKraken whereExpr = null;
  
      token = scanToken();
      
      if (token == Token.WHERE) {
        whereExpr = parseExpr();
      }
      else if (token != null) {
        throw error("expected WHERE at '{0}'", token);
      }
  
      ParamExpr []params = _params.toArray(new ParamExpr[_params.size()]);
  
      query.setParams(params);
      query.setWhereExpr(whereExpr);
  
      return query;
    }
docs: watch: adding and removing listeners.