How to get a list of values out of json in CFEngine 3.6+

jsonslist.cf

#it can be non-intuitive to get a slist from a json data object in CFEngine
# this can be useful if you have a json with hostnames as keys
vars:
  "data" data => parsejson("{ "key": ["one", "two", "three"] }");
  "values" slist => getvalues("data[key]"); #just pass the name, not the variable itself
  #just an example, I haven't loaded moredata in this gist
  "info" slist => getvalues("moredata[$(sys.fqhost)]");