code: def test_aes_overwrite():
      with pytest.warns(PlotnineWarning):
          geom_abline(aes(intercept="y"), intercept=2)
  
imports: import pandas
  import pytest
  from plotnine import aes, geom_abline, geom_point, ggplot
  from plotnine.exceptions import PlotnineWarning
label_desc: Use image node_id 3 for calling a global function with example usage: test_aes_overwrite() without return types