Let reactive expressions .watch method support async functions

[MarcSkovMadsen]

I'm trying to make an async .watch example for the Panel basic tutorials.

It seems reactive expressions .watch does not support async functions.

import asyncio
import concurrent.futures
from time import sleep

import panel as pn

pn.extension()

is_stopped=pn.rx(True)
is_active = pn.rx(False)

def name(stopped):
    if stopped:
        return "Start the wind turbine"
    else:
        return "Stop the wind turbine"

rx_name = pn.rx(name)(is_stopped)

submit = pn.widgets.Button(name=rx_name, disabled=is_active, loading=is_active)

async def start_stop_wind_turbine(clicked):
    if not clicked:
        return
    is_active.rx.value=True
    with submit.param.update(loading=True, disabled=True):
        with concurrent.futures.ThreadPoolExecutor() as executor:
            future = executor.submit(sleep, 1)
            result = await asyncio.wrap_future(future)

        is_stopped.rx.value = not is_stopped.rx.value
    is_active.rx.value=False
    print("done")


b_stop_wind_turbine = submit.rx.watch(start_stop_wind_turbine)

pn.Column(submit, b_stop_wind_turbine, is_active).servable()

When I click the button I see

RuntimeWarning: coroutine 'start_stop_wind_turbine' was never awaited