code: def test_point_size_op(self):
      points = Points(
          [(0, 0, 1), (0, 1, 4), (0, 2, 8)], vdims="size"
      ).opts(size="size")
      plot = bokeh_renderer.get_plot(points)
      cds = plot.handles["cds"]
      glyph = plot.handles["glyph"]
      self.assertEqual(cds.data["size"], np.array([1, 4, 8]))
      self.assertEqual(property_to_dict(glyph.size), {"field": "size"})
  
imports: import datetime
  import numpy
  import pandas
  from bokeh.models import CategoricalColorMapper, FactorRange, LinearColorMapper, Scatter
  from holoviews.core import NdOverlay
  from holoviews.core.options import Cycle
  from holoviews.element import Points
  from holoviews.plotting.bokeh.util import property_to_dict
  from holoviews.streams import Stream
  from ..utils import ParamLogStream
  from .test_plot import TestBokehPlot, bokeh_renderer
label_desc: Use image node_id 48 for calling the TestPointPlot obj's underlying member method code with example usage: obj.test_point_size_op() without return types