How easy is it to change the app object I'm fastHTML from starlette to another package

[Karthik777]

I've been following Robyn which is a rust based web server which boasts some amazing performance metrics. The API seems almost similar to starlette. I think I can have that and just use fastHTML to get UI parts, but a cleaner way would be to extend FastHTML class from. The Robyn app rather than Starlette. But I don't know what I don't know. Is it doable, any gotchas to think of?