code: def test_path_continuously_varying_line_width_op(self):
      xs = [1, 2, 3, 4]
      ys = xs[::-1]
      line_width = [1, 7, 3, 2]
      data = {"x": xs, "y": ys, "line_width": line_width}
      path = Path([data], vdims="line_width").opts(
          line_width="line_width"
      )
      plot = bokeh_renderer.get_plot(path)
      source = plot.handles["source"]
      self.assertEqual(
          source.data["xs"],
          [np.array([1, 2]), np.array([2, 3]), np.array([3, 4])],
      )
      self.assertEqual(
          source.data["ys"],
          [np.array([4, 3]), np.array([3, 2]), np.array([2, 1])],
      )
      self.assertEqual(source.data["line_width"], np.array([1, 7, 3]))
  
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 10 for calling the TestPathPlot obj's underlying member method code with example usage: obj.test_path_continuously_varying_line_width_op() without return types