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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 add_virtualip(self, lb, vip):
 """Adds the VirtualIP to the specified load balancer."""

        resp, body = self.api.method_post("/loadbalancers/%s/virtualips" % lb.id,
                body=vip.to_dict())
        return resp, body