code: def test_scatter_size(self):
      scatter = Scatter([3, 2, 1]).opts(size="y")
      state = self._get_plot_state(scatter)
      self.assertEqual(
          state["data"][0]["marker"]["size"], np.array([3, 2, 1])
      )
  
imports: import numpy
  from holoviews.element import Scatter, Tiles
  from .test_plot import TestPlotlyPlot
label_desc: Use image node_id 4 for calling the TestScatterPlot obj's underlying member method code with example usage: obj.test_scatter_size() without return types