class_docstr: Class for unittest
class_docstr_tok: ["Class","for","unittest"]
docstr: Test tagging Latin POS with bigram tagger.
code: def test_pos_bigram_latin(self):
      """Test tagging Latin POS with bigram tagger."""
      tagger = POSTag("lat")
      tagged = tagger.tag_bigram(
          "Gallia est omnis divisa in partes tres"
      )
      self.assertTrue(tagged)
  
imports: import os
  import shutil
  import unittest
  from cltk.data.fetch import FetchCorpus
  from cltk.tag import ner
  from cltk.tag.ner import NamedEntityReplacer
  from cltk.tag.pos import POSTag
  from cltk.text.lat import replace_jv
  from cltk.utils import CLTK_DATA_DIR
label_desc: Use image node_id 8 for calling the TestSequenceFunctions obj's underlying member method code with example usage: obj.test_pos_bigram_latin() without return types