code: def test_lm_score(self):
      score = sub._score(sample1, fields=["hypothesis", "premise"])
      self.assertTrue(abs(score - 11634) < 1)
  
imports: import unittest
  from textflint.generation.subpopulation.UT import LMSubPopulation
  from textflint.input.component.sample import NLISample
label_desc: Use image node_id 1 for calling the TestLengthSubPopulation obj's underlying member method code with example usage: obj.test_lm_score() without return types