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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 on_purchase_completed(self, mapping={'payload': 'payload','name':'name','status':'status','token':'token'}, convert={}, default={}):
 """Decorator routes an Connections.Response to the wrapped function. Request is sent when Alexa completes the purchase flow. See https://developer.amazon.com/docs/in-skill-purchase/add-isps-to-a-skill.html#handle-results The wrapped view function may accept parameters from the Request. In addition to locale, requestId, timestamp, and type @ask.on_purchase_completed( mapping={'payload': 'payload','name':'name','status':'status','token':'token'}) def completed(payload, name, status, token):
 logger.info(payload) logger.info(name) logger.info(status) logger.info(token) """

        def decorator(f):
            self._intent_view_funcs['Connections.Response'] = f
            self._intent_mappings['Connections.Response'] = mapping
            self._intent_converts['Connections.Response'] = convert
            self._intent_defaults['Connections.Response'] = default
            @wraps(f)
            def wrapper(*args, **kwargs):
                self._flask_view_func(*args, **kwargs)
            return f
        return decorator