whole_func_string: function (callback) {
      var plugins = Object.keys(pluginHelpers.loadedPlugins || {});
      async.eachSeries(plugins, pluginHelpers.stop, callback);
    }
func_code_string: function (callback) {
      var plugins = Object.keys(pluginHelpers.loadedPlugins || {});
      async.eachSeries(plugins, pluginHelpers.stop, callback);
    }
func_documentation_string: Stop all plugins.
  
  @param callback Termination.