code: def test_marker_fillstyle():
      marker_style = markers.MarkerStyle(marker="o", fillstyle="none")
      assert marker_style.get_fillstyle() == "none"
      assert not marker_style.is_filled()
  
imports: import numpy
  import matplotlib.pyplot
  from matplotlib import markers
  from matplotlib.path import Path
  from matplotlib.testing.decorators import check_figures_equal
  from matplotlib.transforms import Affine2D
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: test_marker_fillstyle() without return types