icmp-type with limit Rich rule

[Phurion]

I'm looking to be able to do what's below
firewall-cmd --permanent --add-rich-rule='rule family=ipv4 icmp-type name="destination-unreachable" limit value="20/s" accept'

Which looks like
rule family="ipv4" icmp-type name="destination-unreachable" accept limit value="20/s"

[Phurion]

@alexjfisher I'm sure I can get this working with direct-rule. I would like to see something like

Rich-Rule { 'something':
icmp-type => 'destination-unreachable',
limit => '20/s'
}

or

Rich-Rule { 'something':
icmp-type => 'destination-unreachable',
limit => {
time => '20',
time_unit => 'seconds'
}
}