code: def test_markers_valid(marker):
      # Checking this doesn't fail.
      markers.MarkerStyle(marker)
  
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 2 for calling a global function with example usage: test_markers_valid(marker) without return types