code: def test_position_from_geom():
      geom = geom_point(position="jitter")
      assert isinstance(position.from_geom(geom), position_jitter)
  
      geom = geom_point(position="position_jitter")
      assert isinstance(position.from_geom(geom), position_jitter)
  
      geom = geom_point(position=position_jitter())
      assert isinstance(position.from_geom(geom), position_jitter)
  
      geom = geom_point(position=position_jitter)
      assert isinstance(position.from_geom(geom), position_jitter)
  
imports: import string
  import numpy
  import pandas
  import pytest
  from plotnine import aes, after_stat, geom_bar, geom_boxplot, geom_col, geom_jitter, geom_point, geom_rect, geom_segment, geom_text, ggplot, position_dodge, position_dodge2, position_jitter, position_jitterdodge, position_nudge, position_stack, scale_y_log10, stage
  from plotnine.exceptions import PlotnineError
  from plotnine.positions.position import position
label_desc: Use image node_id 15 for calling a global function with example usage: test_position_from_geom() without return types