old_contents: 'use strict';
  
  var MonitorTestSerial = require('./lib/mt/MonitorTestSerial').MonitorTestSerial;
  var Client = require('./lib/client/Client').Client;
  
  module.exports.createClient = function() {
    return new Client(new MonitorTestSerial());
  };
new_contents: 'use strict';
  
  var Client = require('./lib/zcl/ZCLClient');
  module.exports = Client;
subject: Fix index.js