code: def test_bo2model():
      test_empty_more_like(classify.Bo2Model)
      test_add_text(classify.Bo2Model)
      test_keyterms_from_text(classify.Bo2Model)
      test_more_like_this(classify.Bo2Model)
      test_more_like(classify.Bo2Model)
      test_keyterms(classify.Bo2Model)
      test_fake_more_like(classify.Bo2Model)
  
file_path: whoosh/tests/test_classify.py
imports: from __future__ import with_statement
  from whoosh import analysis, classify, fields, formats, query, reading
  from whoosh.compat import u, text_type
  from whoosh.filedb.filestore import RamStorage
  from whoosh.util.testing import TempIndex
label_desc: Use image node_id 9 for calling a global function with example usage: test_bo2model() without return types