code: function(bs, done) {
          var plugins = bs.options
              .get("plugins")
              .map(pluginUtils.resolvePlugin)
              .map(pluginUtils.requirePlugin);
  
          plugins.forEach(function(plugin) {
              if (plugin.get("errors").size) {
                  return logPluginError(plugin);
              }
              var jsPlugin = plugin.toJS();
              jsPlugin.options = jsPlugin.options || {};
              jsPlugin.options.moduleName = jsPlugin.moduleName;
              bs.registerPlugin(jsPlugin.module, jsPlugin.options);
          });
  
          function logPluginError(plugin) {
              utils.fail(true, plugin.getIn(["errors", 0]), bs.cb);
          }
  
          done();
      }
docs: Try to load plugins that were given in options
  @param {BrowserSync} bs
  @param {Function} done