code: def create_pc_png():
      fig = plt.figure()
      ax = fig.add_subplot(1, 1, 1, projection=ccrs.PlateCarree())
      ax.coastlines()
      ax.stock_img()
      plt.savefig(io.BytesIO(), format="png")
      plt.close(fig)
  
imports: import io
  import matplotlib.pyplot
  import cartopy.crs
label_desc: Use image node_id 1 for calling a global function with example usage: create_pc_png() without return types