code: def test_children(self):
      self.assertTrue(self.top.has_children())
      self.assertTrue(self.Mine.has_children())
      self.assertFalse(self.foo.has_children())
  
imports: import symtable
  import unittest
  from test import support
  from test.support import os_helper
label_desc: Use image node_id 5 for calling the SymtableTest obj's underlying member method code with example usage: obj.test_children() without return types