text: define(function(require, exports, module) {
  
      var _ = require("underscore");
      var BaseCellRenderer = require("./BaseCellRenderer");
  
      return BaseCellRenderer.extend({
  
          setup: function($td, cellData) {
              $td.addClass("null");
          },
  
          teardown: function($td, cellData) {
              $td.removeClass("null");
          },
  
          canRender: function(cellData) {
              return (_.isNull(cellData.value) || _.isEqual(cellData.value, []));
          },
  
          render: function($td, cellData) {
              $td.html("&nbsp;");
          }
  
      });
  
  });
  