No "exists" functionality

[schmmd]

It would be nice if list were extended to take --name and --version so it could be used to check if an artifact exists.

 %) java -jar ~/Downloads/DatastoreCli.jar list -g "edu.stanford.nlp.models.pos-tagger" --name english-left3words-3.4.1 --version 1
Error: Unknown option --name
Error: Unknown argument 'english-left3words-3.4.1'
Error: Unknown option --version
Error: Unknown argument '1'
Usage: scopt [options]

  -d <value> | --datastore <value>
        Datastore to use. Default is public
  -g <value> | --group <value>
        Group name of the objects to list