code: def test_pointdensity():
      p = p0 + geom_pointdensity(size=10)
      assert p == "contours"
  
imports: import numpy
  import pandas
  from plotnine import aes, after_stat, geom_point, geom_pointdensity, ggplot, scale_size_radius
label_desc: Use image node_id 1 for calling a global function with example usage: test_pointdensity() without return types