code: def test_empty_extended_summary():
      assert_equal(doc4["Extended Summary"], [])
  
imports: import sys, textwrap
  from numpydoc.docscrape import NumpyDocString, FunctionDoc, ClassDoc
  from numpydoc.docscrape_sphinx import SphinxDocString, SphinxClassDoc
  from nose.tools import *
label_desc: Use image node_id 16 for calling a global function with example usage: test_empty_extended_summary() without return types