vyos@r4-1.3# set firewall name foo rule 10 icmp code 
Possible completions:
   <0-4294967295>
                ICMP code (0-255)

vyos@r4-1.3# set firewall name foo rule 10 icmp type 
Possible completions:
   <0-4294967295>
                ICMP type (0-255)