Accessing couchbase as memcached

So here https://docs.couchbase.com/server/6.0/install/install-client-server.html#client-side-memcached-to-couchbase-proxy it says you can “Deploy a standalone Memcached to Couchbase Server proxy, called Moxi in the following cases” but I can’t find this anywhere. I would like to use this for a php based N-Tier app, that will share the session state across the front ends in memcached which is a supported php session sharing method.

Any pointers where I can find Moxi?

Thank you,
Matt