code: def test_get_size_row_plot(self):
      plot = self.renderer.get_plot(self.image1 + self.image2)
      w, h = self.renderer.get_size(plot)
      self.assertEqual((w, h), (600, 300))
  
imports: from io import BytesIO
  from unittest import SkipTest
  import numpy
  import panel
  import param
  from bokeh.io import curdoc
  from bokeh.themes.theme import Theme
  from panel.widgets import DiscreteSlider, FloatSlider, Player
  from pyviz_comms import CommManager
  from holoviews import Curve, DynamicMap, GridSpace, HoloMap, Image, Table
  from holoviews.element.comparison import ComparisonTestCase
  from holoviews.plotting import Renderer
  from holoviews.plotting.bokeh import BokehRenderer
  from holoviews.streams import Stream
label_desc: Use image node_id 6 for calling the BokehRendererTest obj's underlying member method code with example usage: obj.test_get_size_row_plot() without return types