Commands not working as docuemented in the S-Ramp CLI

Issue

We are exploring to use S-Ramp CLI ¹. We successfully started the shell, and connected to the server:

$ ./artificer.sh 
...
**********************************************************************
*  Artificer CLI
*  Licensed under Apache License V2.0, Copyright 2015
*  Locale: en_US
**********************************************************************

artificer> connect http://localhost:8080/artificer-server
username: admin
password: **********
Successfully connected to Artificer endpoint: http://localhost:8080/artificer-server

However running the command to upload an artifact fails:

artificer> upload /path/to/test-artifact.jar
Command: upload was not found.

What is the command to upload artifacts through S-RAMP COMMAND LINE?(1)