code: def rrcurveto(args):
      if not args:
          raise ValueError(args)
      for args in _everyN(args, 6):
          yield ("rrcurveto", args)
  
imports: from fontTools.cffLib import maxStackLimit
label_desc: Use image node_id 7 for calling the _GeneralizerDecombinerCommandsMap obj's underlying member method code with example usage: obj.rrcurveto(args) without return types