'Get a NAT rule by ID
:param  network_domain: The network domain the rule belongs to
:type   network_domain: :class:`DimensionDataNetworkDomain`
:param  rule_id: The ID of the NAT rule to fetch
:type   rule_id: ``str``
:rtype: :class:`DimensionDataNatRule`'

def ex_get_nat_rule(self, network_domain, rule_id):

    rule = self.connection.request_with_orgId_api_2(('network/natRule/%s' % rule_id)).object
    return self._to_nat_rule(rule, network_domain)
