code: def test_violin_multi(self):
      violin = Violin(
          (np.random.randint(0, 2, 100), np.random.rand(100)),
          kdims=["A"],
      ).sort()
      r1, r2 = violin.range(1)
      plot = bokeh_renderer.get_plot(violin)
      self.assertEqual(plot.handles["x_range"].factors, ["0", "1"])
  
imports: from unittest import SkipTest
  import numpy
  from bokeh.models import CategoricalColorMapper, LinearColorMapper
  from holoviews.element import Violin
  from holoviews.operation.stats import univariate_kde
  from holoviews.plotting.bokeh.util import property_to_dict
  from holoviews.util.transform import dim
  from .test_plot import TestBokehPlot, bokeh_renderer
label_desc: Use image node_id 6 for calling the TestBokehViolinPlot obj's underlying member method code with example usage: obj.test_violin_multi() without return types