code: def test_violin_simple_overlay(self):
      values = np.random.rand(100)
      violin = Violin(values) * Violin(values)
      plot = mpl_renderer.get_plot(violin)
      p1, p2 = plot.subplots.values()
      self.assertEqual(
          p1.handles["boxes"][0].get_path().vertices,
          p2.handles["boxes"][0].get_path().vertices,
      )
      for b1, b2 in zip(
          p1.handles["bodies"][0].get_paths(),
          p2.handles["bodies"][0].get_paths(),
      ):
          self.assertEqual(b1.vertices, b2.vertices)
  
file_path: holoviews/holoviews/tests/plotting/matplotlib/test_violinplot.py
imports: import numpy
  from holoviews.element import Violin
  from .test_plot import TestMPLPlot, mpl_renderer
label_desc: Use image node_id 2 for calling the TestMPLViolinPlot obj's underlying member method code with example usage: obj.test_violin_simple_overlay() without return types