Generate a Transport target object based on the instance's configuration

def get_transport_target(cls, instance, timeout, retries):
        '''
        Generate a Transport target object based on the instance's configuration
        '''
        if "ip_address" not in instance:
            raise Exception("An IP address needs to be specified")
        ip_address = instance["ip_address"]
        port = int(instance.get("port", 161))  # Default SNMP port
        return hlapi.UdpTransportTarget((ip_address, port), timeout=timeout, retries=retries)