code: def test_pil_kwargs_png():
      from PIL.PngImagePlugin import PngInfo
  
      buf = io.BytesIO()
      pnginfo = PngInfo()
      pnginfo.add_text("Software", "test")
      plt.figure().savefig(
          buf, format="png", pil_kwargs={"pnginfo": pnginfo}
      )
      im = Image.open(buf)
      assert im.info["Software"] == "test"
  
imports: import io
  import numpy
  from numpy.testing import assert_array_almost_equal
  from PIL import Image, TiffTags
  import pytest
  from matplotlib import collections, patheffects, pyplot, transforms, rcParams, rc_context
  from matplotlib.backends.backend_agg import RendererAgg
  from matplotlib.figure import Figure
  from matplotlib.image import imread
  from matplotlib.path import Path
  from matplotlib.testing.decorators import image_comparison
  from matplotlib.transforms import IdentityTransform
label_desc: Use image node_id 9 for calling a global function with example usage: test_pil_kwargs_png() without return types