code: def test_sort(self):
      self.base.sort()
      self.assertNotEqual(
          self.lazy, self.base, "Test data already sorted"
      )
      self.lazy.sort()
      self.assertEqual(self.lazy, self.base)
  
imports: from operator import eq, ge, gt, le, lt, ne, add, concat, not_, sub, and_, or_, xor
  import os.path
  import sys
  import unittest
  import warnings
  from pytz.lazy import LazyList, LazySet
label_desc: Use image node_id 18 for calling the LazyListTestCase obj's underlying member method code with example usage: obj.test_sort() without return types