code: def get(kind, rowtype, linetype):
      key = kind, rowtype, linetype
      try:
          return REGISTRY[key]
      except (KeyError, TypeError):
          assert kind in KIND and linetype in LINETYPE
          raise ValueError("invalid/unsupported rowtype: %r" % rowtype)
  
label_desc: Use image node_id 2 for calling a global function with example usage: get(kind, rowtype, linetype) and returns: REGISTRY