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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 delete_vpnservice(self, vpnservice):
        '''
        Deletes the specified VPN service
        '''
        vpnservice_id = self._find_vpnservice_id(vpnservice)
        ret = self.network_conn.delete_vpnservice(vpnservice_id)
        return ret if ret else True