code: def test_normalize_bound(self):
      self.assertEqual(SubPopulation.normalize_bound(0.3, 100), 30)
      self.assertEqual(SubPopulation.normalize_bound("30%", 100), 30)
  
imports: import unittest
  from textflint.generation.subpopulation import SubPopulation
  from textflint.input.component.sample import NLISample
label_desc: Use image node_id 1 for calling the TestSubPopulation obj's underlying member method code with example usage: obj.test_normalize_bound() without return types