text: tinymce.PluginManager.add('example', function(editor, url) {
      // Add a button that opens a window
      editor.addButton('example', {
          text: '文件浏览器',
          icon: 'insert',
          tooltip: '资源浏览器',
          onclick: function() {
              editor.fileBrowser()
          }
      });
  
      return {
          getMetadata: function () {
              return  {
                  name: "file browser",
                  url: "http://exampleplugindocsurl.com"
              };
          }
      };
  });
  