Is there a way to automatically toggle off the city boundary after a few seconds? I tried using time.sleep() however it did not work. Thank you so much.

[Python Code](https://i.stack.imgur.com/MCrUO.png):

```
import folium
import os
import time

m = folium.Map(location=[22.3193, 114.1694], zoom_start=10, tiles='CartoDB Dark_ Matter', zoom_control=False, height='75%')

outline = os.path.join('outline.json')

folium.GeoJson(outline, name='outline', show=True).add_to(m)
time.sleep(1000)
folium.GeoJson(outline, name='outline', show=False).add_to(m)

folium.TileLayer('CartoDB Dark_Matter').add_to(m)
folium.TileLayer('CartoDB Positron').add_to(m)

folium.LayerControl().add_to(m)

m.save('map.html')

```

[This is the Folium Map](https://i.stack.imgur.com/kmlLV.png)