code: def test_sphinx_gallery_example_header():
      """
      We have copied EXAMPLE_HEADER and modified it to include meta keywords.
      This test monitors that the version we have copied is still the same as
      the EXAMPLE_HEADER in sphinx-gallery. If sphinx-gallery changes its
      EXAMPLE_HEADER, this test will start to fail. In that case, please update
      the monkey-patching of EXAMPLE_HEADER in conf.py.
      """
      gen_rst = pytest.importorskip("sphinx_gallery.gen_rst")
  
      EXAMPLE_HEADER = """
  .. DO NOT EDIT.
  .. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
  .. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
  .. "{0}"
  .. LINE NUMBERS ARE GIVEN BELOW.
  
  .. only:: html
  
      .. note::
          :class: sphx-glr-download-link-note
  
          :ref:`Go to the end <sphx_glr_download_{1}>`
          to download the full example code{2}
  
  .. rst-class:: sphx-glr-example-title
  
  .. _sphx_glr_{1}:
  
  """
      assert gen_rst.EXAMPLE_HEADER == EXAMPLE_HEADER
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_sphinx_gallery_example_header() without return types