public boolean login(String name ,String password){
			Sql sql = Sqls.create("select opname,oppassword  from m_operator ");
			sql.setCallback(new SqlCallback() {
			      @Override
			      public List<NutMap> invoke(Connection conn, ResultSet rs, Sql sql) throws SQLException {
			    	  List<NutMap> lists =  new ArrayList<>();
			        while (rs.next()) {
			         NutMap lt = new NutMap();
			          lt.addv("name",rs.getString(1));
			          lt.addv("time",rs.getString(2));
			          lists.add(lt);
			        }
			        return lists;
			      }
			    });
			dao().execute(sql);
			
			List<NutMap> rest = sql.getList(List<NutMap>);
			
			return rest;
	}

sql.getList() 中List实体类应该怎么写呢？