code: def test_theme_rendering(self):
      attrs = {"figure": {"outline_line_color": "#444444"}}
      theme = Theme(json={"attrs": attrs})
      self.renderer.theme = theme
      plot = self.renderer.get_plot(Curve([]))
      self.renderer.components(plot, "html")
      self.assertEqual(plot.state.outline_line_color, "#444444")
  
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 11 for calling the BokehRendererTest obj's underlying member method code with example usage: obj.test_theme_rendering() without return types