code: def define(self, tokens):
      if isinstance(tokens, STRING_TYPES):
          tokens = self.tokenize(tokens)
  
      linetok = tokens
      try:
          name = linetok[0]
          if len(linetok) > 1:
              mtype = linetok[1]
          else:
              mtype = None
          if not mtype:
              m = Macro(name.value, [])
              self.macros[name.value] = m
          elif mtype.type in self.t_WS:
              # A normal macro
              m = Macro(name.value, self.tokenstrip(linetok[2:]))
              self.macros[name.value] = m
          elif mtype.value == "(":
              # A macro with arguments
              tokcount, args, positions = self.collect_args(linetok[1:])
              variadic = False
              for a in args:
                  if variadic:
                      print(
                          "No more arguments may follow a variadic argument"
                      )
                      break
                  astr = "".join([str(_i.value) for _i in a])
                  if astr == "...":
                      variadic = True
                      a[0].type = self.t_ID
                      a[0].value = "__VA_ARGS__"
                      variadic = True
                      del a[1:]
                      continue
                  elif astr[-3:] == "..." and a[0].type == self.t_ID:
                      variadic = True
                      del a[1:]
                      # If, for some reason, "." is part of the identifier, strip off the name for the purposes
                      # of macro expansion
                      if a[0].value[-3:] == "...":
                          a[0].value = a[0].value[:-3]
                      continue
                  if len(a) > 1 or a[0].type != self.t_ID:
                      print("Invalid macro argument")
                      break
              else:
                  mvalue = self.tokenstrip(linetok[1 + tokcount :])
                  i = 0
                  while i < len(mvalue):
                      if i + 1 < len(mvalue):
                          if (
                              mvalue[i].type in self.t_WS
                              and mvalue[i + 1].value == "##"
                          ):
                              del mvalue[i]
                              continue
                          elif (
                              mvalue[i].value == "##"
                              and mvalue[i + 1].type in self.t_WS
                          ):
                              del mvalue[i + 1]
                      i += 1
                  m = Macro(
                      name.value,
                      mvalue,
                      [x[0].value for x in args],
                      variadic,
                  )
                  self.macro_prescan(m)
                  self.macros[name.value] = m
          else:
              print("Bad macro definition")
      except LookupError:
          print("Bad macro definition")
  
imports: import sys
  import re
  import copy
  import time
  import os.path
label_desc: Use image node_id 15 for calling the Preprocessor obj's underlying member method code with example usage: obj.define(tokens) without return types