初始化spooky.js后如何加载网页

Question

初始化后是否有可能将任务链接到spookyjs？像这样：

Spooky = require('spooky');
var spooky = new Spooky({
    child: {
        transport: 'http'
    },
    casper: {
        logLevel: 'debug',
        verbose: true
    }
}, function (err) {
    if (err) {
        e = new Error('Failed to initialize SpookyJS');
        e.details = err;
        throw e;
    }

    spooky.start(
        'http://en.wikipedia.org/wiki/Spooky_the_Tuff_Little_Ghost');
    spooky.run();
});

spooky.thenOpen('http://google.com', function () {
    console.log('bla');
});

spooky.on('console', function (line) {
    console.log(line);
});

但是当我这样做时，我收到了这个错误：

TypeError: Object # has no method 'thenOpen'