code: def setUp(self):
      self.previous_backend = Store.current_backend
      Store.set_current_backend("plotly")
      self.comm_manager = plotly_renderer.comm_manager
      plotly_renderer.comm_manager = comms.CommManager
      self._padding = {}
      for plot in concrete_descendents(ElementPlot).values():
          self._padding[plot] = plot.padding
          plot.padding = 0
  
imports: import plotly.graph_objs
  import pyviz_comms
  from param import concrete_descendents
  from holoviews.core import Store
  from holoviews.element.comparison import ComparisonTestCase
  from holoviews.plotting.plotly.element import ElementPlot
  from holoviews.plotting.plotly.util import figure_grid
  from ..None import option_intersections
label_desc: Use image node_id 1 for calling the TestPlotlyPlot obj's underlying member method code with example usage: obj.setUp() without return types