How do i permanently add a service to firewalld?

amurleopard

$ sudo firewall-cmd --add-service=saltstack --permanent
success
$ sudo firewall-cmd --list-all
public
  target: default
  icmp-block-inversion: no
  interfaces: 
  sources: 
  services: dhcpv6-client saltstack ssh
  ports: 
  protocols: 
  masquerade: no
  forward-ports: 
  sourceports: 
  icmp-blocks: 
  rich rules: