Node replacement procedure

I am running k8ssandra 1.2.1 on a 3 nodes k3s cluster, I would need to know what is the procedure in cause of replacement of one of k3s cluster node cause it crashed.
I have reached the point that the failed k3s cluster node has been replaced in the k3s cluster and the new node is up&running and ready, now I am unsure about the procedure to get the k8ssandra pod running in the new node and of course in sync with the other k8ssandra pods.
I have noted that k8ssandra introduced the replaceNode task but I can find documentation about how to use it and what it does.