code: def test_point_linear_color_op_update(self):
      points = HoloMap(
          {
              0: Points(
                  [(0, 0, 0), (0, 1, 1), (0, 2, 2)], vdims="color"
              ),
              1: Points(
                  [(0, 0, 2.5), (0, 1, 3), (0, 2, 1.2)], vdims="color"
              ),
          }
      ).opts(color="color", framewise=True)
      plot = mpl_renderer.get_plot(points)
      artist = plot.handles["artist"]
      self.assertEqual(artist.get_clim(), (0, 2))
      plot.update((1,))
      self.assertEqual(
          np.asarray(artist.get_array()), np.array([2.5, 3, 1.2])
      )
      self.assertEqual(artist.get_clim(), (1.2, 3))
  
imports: import matplotlib.pyplot
  import numpy
  import pytest
  from holoviews.core.options import AbbreviatedException
  from holoviews.core.overlay import NdOverlay
  from holoviews.core.spaces import HoloMap
  from holoviews.element import Points
  from ..utils import ParamLogStream
  from .test_plot import TestMPLPlot, mpl_renderer
label_desc: Use image node_id 25 for calling the TestPointPlot obj's underlying member method code with example usage: obj.test_point_linear_color_op_update() without return types