def get_firewall_rule(self, server_uuid, firewall_rule_position, server_instance=None):
url = '<STR_LIT>'.format(server_uuid, firewall_rule_position)<EOL>res = self.get_request(url)<EOL>return FirewallRule(**res['<STR_LIT>'])<EOL>
Return a FirewallRule object based on server uuid and rule position.