code: def rcurveline(args):
      if len(args) < 8 or len(args) % 6 != 2:
          raise ValueError(args)
      args, last_args = args[:-2], args[-2:]
      for args in _everyN(args, 6):
          yield ("rrcurveto", args)
      yield ("rlineto", last_args)
  
imports: from fontTools.cffLib import maxStackLimit
label_desc: Use image node_id 12 for calling the _GeneralizerDecombinerCommandsMap obj's underlying member method code with example usage: obj.rcurveline(args) without return types