code: def tearDown(self):
      del self.textvar
      super(OptionMenuTest, self).tearDown()
  
imports: import sys
  import unittest
  import Tkinter
  import ttk
  from test.test_support import requires, run_unittest, swap_attr
  from test_ttk.support import AbstractTkTest, destroy_default_root
label_desc: Use image node_id 2 for calling the OptionMenuTest obj's underlying member method code with example usage: obj.tearDown() without return types