code: def test_german_stemmer():
      german_stemmer = Stemmer("german")
      assert "sterb" == german_stemmer("sterben")
  
file_path: sumy/tests/test_stemmers.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import pytest
  from sumy.nlp.stemmers import null_stemmer, Stemmer
label_desc: Use image node_id 4 for calling a global function with example usage: test_german_stemmer() without return types