code: def main():
      fig = plt.figure()
      ax = fig.add_subplot(1, 1, 1, projection=ccrs.PlateCarree())
      ax.set_extent([-20, 60, -40, 45], crs=ccrs.PlateCarree())
  
      ax.add_feature(cfeature.LAND)
      ax.add_feature(cfeature.OCEAN)
      ax.add_feature(cfeature.COASTLINE)
      ax.add_feature(cfeature.BORDERS, linestyle=":")
      ax.add_feature(cfeature.LAKES, alpha=0.5)
      ax.add_feature(cfeature.RIVERS)
  
      plt.show()
  
imports: import matplotlib.pyplot
  import cartopy.crs
  import cartopy.feature
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types