code: def test_index_in_sen(self):
      self.assertEqual(
          sample1.eqlen_sen_map(), [0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1]
      )
      self.assertEqual(sample1.index_in_sen(5), 0)
      self.assertEqual(sample1.index_in_sen(6), 1)
  
file_path: textflint/test/input/component/sample/test_coref_sample.py
imports: from textflint.input.component.sample.coref_sample import *
  import unittest
  import random
  from test.data.coref_debug import CorefDebug
label_desc: Use image node_id 3 for calling the TestCorefSample obj's underlying member method code with example usage: obj.test_index_in_sen() without return types