code: def test_init(self):
      mctext = self.mc(self.root)
      self.assertIsInstance(mctext._MultiCall__binders, list)
  
file_path: cpython/Lib/idlelib/idle_test/test_multicall.py
imports: from idlelib import multicall
  import unittest
  from test.support import requires
  from tkinter import Tk, Text
label_desc: Use image node_id 4 for calling the MultiCallTest obj's underlying member method code with example usage: obj.test_init() without return types