code: def test_artist_inspector_get_aliases():
      # test the correct format and type of get_aliases method
      ai = martist.ArtistInspector(mlines.Line2D)
      aliases = ai.get_aliases()
      assert aliases["linewidth"] == {"lw"}
  
imports: import io
  from itertools import chain
  import numpy
  import pytest
  import matplotlib.colors
  import matplotlib.pyplot
  import matplotlib.patches
  import matplotlib.lines
  import matplotlib.path
  import matplotlib.transforms
  import matplotlib.collections
  import matplotlib.artist
  import matplotlib.backend_bases
  import matplotlib
  from matplotlib.testing.decorators import check_figures_equal, image_comparison
label_desc: Use image node_id 13 for calling a global function with example usage: test_artist_inspector_get_aliases() without return types