code: def colorlist(self, *args):
      if tkinter.TkVersion >= 8.6 and self.wantobjects:
          return args
      else:
          return tkinter._join(args)
  
imports: import unittest
  import tkinter
  from test import support
  from test.support import os_helper
  from test.test_tkinter.support import AbstractTkTest, AbstractDefaultRootTest, requires_tk
label_desc: Use image node_id 3 for calling the PhotoImageTest obj's underlying member method code with example usage: obj.colorlist() and returns: args, tkinter