code: def test_current_line(document):
      assert document.current_line == "line 2"
  
file_path: catboost/contrib/python/prompt-toolkit/py2/tests/test_document.py
imports: from __future__ import unicode_literals
  import pytest
  from prompt_toolkit.document import Document
label_desc: Use image node_id 9 for calling a global function with example usage: test_current_line(document) without return types