code: def test_stream_callback_single_call(self):
      history = deque(maxlen=10)
  
      def history_callback(x):
          history.append(x)
          return Curve(list(history))
  
      stream = PointerX(x=0)
      dmap = DynamicMap(history_callback, kdims=[], streams=[stream])
      plot = plotly_renderer.get_plot(dmap)
      plotly_renderer(dmap)
      for i in range(20):
          stream.event(x=i)
      state = plot.state
      self.assertEqual(state["data"][0]["x"], np.arange(10))
      self.assertEqual(state["data"][0]["y"], np.arange(10, 20))
  
imports: from collections import deque
  import numpy
  import pandas
  from holoviews.core.spaces import DynamicMap
  from holoviews.element import Curve, Path3D, Scatter3D
  from holoviews.streams import PointerX
  from .test_plot import TestPlotlyPlot, plotly_renderer
label_desc: Use image node_id 1 for calling the TestElementPlot obj's underlying member method code with example usage: obj.test_stream_callback_single_call() and returns: Curve