docs: function(id){
          if(id){
              var plugins = this.doc.findall('./plugin/[@name="' + id + '"]')
                  .concat(this.doc.findall('./feature/param[@name="id"][@value="' + id + '"]/..'));
              var children = this.doc.getroot().getchildren();
              plugins.forEach(function (plugin) {
                  var idx = children.indexOf(plugin);
                  if (idx > -1) {
                      children.splice(idx, 1);
                  }
              });
          }
      }