code: def test_default(self):
      inst = RandTest()
      r1 = inst.R.rand()
      self.assertTrue(isinstance(inst.R, np.random.RandomState))
      inst.set_random_state()
      r2 = inst.R.rand()
      self.assertNotAlmostEqual(r1, r2)
  
file_path: MONAI/tests/test_randomizable.py
imports: from __future__ import annotations
  import unittest
  import numpy
  from monai.transforms.transform import Randomizable
label_desc: Use image node_id 1 for calling the TestRandomizable obj's underlying member method code with example usage: obj.test_default() without return types