code: def test_polygons_colored_batched_unsanitized(self):
      polygons = NdOverlay(
          {
              j: Polygons(
                  [
                      [(i**j, i, j) for i in range(10)]
                      for i in range(2)
                  ],
                  vdims=["some ? unescaped name"],
              )
              for j in range(5)
          }
      ).opts(legend_limit=0)
      plot = next(
          iter(bokeh_renderer.get_plot(polygons).subplots.values())
      )
      cmapper = plot.handles["color_mapper"]
      self.assertEqual(cmapper.low, 0)
      self.assertEqual(cmapper.high, 4)
      source = plot.handles["source"]
      self.assertEqual(
          source.data["some_question_mark_unescaped_name"],
          [j for i in range(5) for j in [i, i]],
      )
  
imports: import datetime
  import numpy
  import pandas
  from bokeh.models import CategoricalColorMapper, LinearColorMapper
  from holoviews.core import HoloMap, NdOverlay
  from holoviews.core.options import Cycle
  from holoviews.element import Contours, Path, Polygons
  from holoviews.plotting.bokeh.util import property_to_dict
  from holoviews.streams import PolyDraw
  from holoviews.util.transform import dim
  from .test_plot import TestBokehPlot, bokeh_renderer
label_desc: Use image node_id 4 for calling the TestPolygonPlot obj's underlying member method code with example usage: obj.test_polygons_colored_batched_unsanitized() without return types