Can't change default function name while using FastAPI

I've been trying to set a custom name while using FastAPI and couldn't find the proper way. It always deploys my function with the name "http_app_func," making deploying multiple functions to the same app impossible.

Has anyone been successful with this task?

This is the syntax I thought it would work:

app = func.AsgiFunctionApp(app=fastapi_app, http_auth_level=func.AuthLevel.FUNCTION).function_name(name="HttpTest")