如何在dojo EnhanceGrid中将超链接替换为文本？

require(["dojo/_base/lang", "dojox/grid/EnhancedGrid", "dojox/grid/enhanced/plugins/IndirectSelection", "dojo/data/ItemFileWriteStore", "dojo/domReady!"],
function(lang, EnhancedGrid, IndirectSelection, ItemFileWriteStore){
  var data = {
    identifier: 'id',
    items: [
      {id: 1, name: 'Item 1', link: 'http://example.com'},
      {id: 2, name: 'Item 2', link: 'http://example.com'},
      {id: 3, name: 'Item 3', link: 'http://example.com'}
    ]
  };

  var store = new ItemFileWriteStore({data: data});

  var layout = [
    {name: 'ID', field: 'id', width: '50px'},
    {name: 'Name', field: 'name', width: '200px'},
    {
      name: 'Link',
      field: 'link',
      width: '200px',
      formatter: function(value){
        return value; // 替换为文本
      }
    }
  ];

  var grid = new EnhancedGrid({
    id: 'grid',
    store: store,
    structure: layout,
    plugins: {
      indirectSelection: true
    }
  });

  grid.placeAt("gridContainer");
  grid.startup();
});