code: def main():
      url = "https://map1c.vis.earthdata.nasa.gov/wmts-geo/wmts.cgi"
      layer = "VIIRS_CityLights_2012"
  
      fig = plt.figure()
      ax = fig.add_subplot(1, 1, 1, projection=ccrs.PlateCarree())
      ax.add_wmts(url, layer)
      ax.set_extent([-15, 25, 35, 60], crs=ccrs.PlateCarree())
  
      ax.set_title("Suomi NPP Earth at night April/October 2012")
      plt.show()
  
label_desc: Use image node_id 1 for calling a global function with example usage: main() without return types