code: function callAsyncPlugin (pluginHelper, methodName, args, callback) {
    var plugins = pluginHelper.filter(filterByMethod(methodName));
    args.schema = pluginHelper[__internal].schema;
    args.config = args.schema.config;
  
    safeCall(callNextPlugin, plugins, methodName, args, callback);
  }
docs: Calls an asynchronous plugin method with the given arguments.
  
  @param {PluginHelper} pluginHelper - The {@link PluginHelper} whose plugins are called
  @param {string} methodName - The name of the plugin method to call
  @param {object} args - The arguments to pass to the method
  @param {function} callback - The callback to call when the method finishes