code: def test_chord_nodes_style_map_node_color_colormapped(self):
      g = self.chord.opts(
          labels="Label",
          node_color="Label",
          cmap=["#FFFFFF", "#888888", "#000000"],
      )
      plot = bokeh_renderer.get_plot(g)
      cmapper = plot.handles["node_color_color_mapper"]
      source = plot.handles["scatter_1_source"]
      arc_source = plot.handles["multi_line_2_source"]
      glyph = plot.handles["scatter_1_glyph"]
      arc_glyph = plot.handles["multi_line_2_glyph"]
      self.assertIsInstance(cmapper, CategoricalColorMapper)
      self.assertEqual(cmapper.factors, ["A", "B", "C"])
      self.assertEqual(
          cmapper.palette, ["#FFFFFF", "#888888", "#000000"]
      )
      self.assertEqual(source.data["Label"], np.array(["A", "B", "C"]))
      self.assertEqual(
          arc_source.data["Label"], np.array(["A", "B", "C"])
      )
      self.assertEqual(
          property_to_dict(glyph.fill_color),
          {"field": "node_color", "transform": cmapper},
      )
      self.assertEqual(
          property_to_dict(arc_glyph.line_color),
          {"field": "node_color", "transform": cmapper},
      )
  
imports: import numpy
  from bokeh.models import EdgesAndLinkedNodes, NodesAndLinkedEdges, NodesOnly, Patches
  from bokeh.models.mappers import CategoricalColorMapper, LinearColorMapper
  from holoviews.core.data import Dataset
  from holoviews.element import Chord, Graph, Nodes, TriMesh, VLine, circular_layout
  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 7 for calling the TestBokehChordPlot obj's underlying member method code with example usage: obj.test_chord_nodes_style_map_node_color_colormapped() without return types