missing pure-certd binary

i'm trying to look at configuring SNI for pure-ftpd on ubuntu 20.04
looking at the man pages, it relies on pure-certd for this, and this should be included in the pure-ftd-common package according to this:
Ubuntu Manpage: pure-certd - TLS certificate agent for Pure-FTPd.
https://manpages.ubuntu.com/manpages/focal/man8/pure-certd.8.html

now i have the required package installed:

apt list --installed | grep pure

pure-ftpd-common/focal,now 1.0.49-4 all [installed]
pure-ftpd-mysql/focal,now 1.0.49-4 amd64 [installed]

but i can't find any trace of pure-certd anywhere on my server

It looks like the .deb packages in Debian and Ubuntu do not include the pure-certd binary.
https://answers.launchpad.net/ubuntu/+source/pure-ftpd/+question/696585