mail_replica equivalent to replicator_host/replicator_port

Silly question but regarding https://wiki.dovecot.org/Replication, is the mail_replica parameter shown in the docs equivalent to replicator_host and replicator_port in 2.3.3 ?

2.3.3 doesn't seem to like the mail_replica param (and indeed doveconf -a doesn't show it as an option)

Thanks !