code: def test_1line_follow_markup_iob(self):
      data = "тележурналіст Василь ."
      bsf_markup = "T1	PERS 14 20	Василь"
      expected = """тележурналіст O
  Василь B-PERS
  . O"""
      self.assertEqual(
          expected, convert_bsf(data, bsf_markup, converter="iob")
      )
  
file_path: stanza/stanza/tests/ner/test_bsf_2_iob.py
imports: import unittest
  from stanza.utils.datasets.ner.convert_bsf_to_beios import convert_bsf, parse_bsf, BsfInfo
  import pytest
label_desc: Use image node_id 1 for calling the TestBsf2Iob obj's underlying member method code with example usage: obj.test_1line_follow_markup_iob() without return types