old_contents: var events = require('events')
    , util = require('util');
  
  
  function Browser() {
    events.EventEmitter.call(this);
  }
  
  util.inherits(Browser, events.EventEmitter);
  
  Browser.prototype.start = function() {
    this.request('/robots.txt');
    this.emit('finish');
  };
  
  
  module.exports = Browser;
  
new_contents: var events = require('events')
    , util = require('util');
  
  
  function Browser() {
    events.EventEmitter.call(this);
  }
  
  util.inherits(Browser, events.EventEmitter);
  
  Browser.prototype.map = function() {
    this.request('/robots.txt');
    this.emit('finish');
  };
  
  
  module.exports = Browser;
  
subject: Rename Browser#start to Browser#map.