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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 cancel_lb(self, loadbal_id):
 """Cancels the specified load balancer. :param int loadbal_id: Load Balancer ID to be cancelled. """


        lb_billing = self.lb_svc.getBillingItem(id=loadbal_id)
        billing_id = lb_billing['id']
        billing_item = self.client['Billing_Item']
        return billing_item.cancelService(id=billing_id)