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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def serialize(self, content):
 """ Serialize to JSONP. :return string: serializaed JSONP """

        content = super(JSONPEmitter, self).serialize(content)
        callback = self.request.GET.get('callback', 'callback')
        return u'%s(%s)' % (callback, content)