Patroni witness node

[jurim76]

Is it possible to create third patroni node for quorum only for classical cluster (one master, two standby)? The database size is real large and we don't want to create additional standby node with a replication.
This kind of this node is similar to repmgr witness server, for example.
repmgr provides functionality to set up a so-called "witness server" to assist in determining a new primary server in a failover situation with more than one standby. The witness server itself is not part of the replication cluster, although it does contain a copy of the repmgr metadata schema.