async def METHOD_NAME(self) -> Optional[Tuple[bool, float]]:
    if not self._lock.locked():
        async with self._lock:
            if payload := await async_request():
                keep_going = payload.elapsed <= self._options.slow_threshold
                await self._misc.METHOD_NAME(
                    payload.buf,
                    lo=payload.lo,
                    hi=payload.hi,
                    filetype=payload.filetype,
                    filename=payload.filename,
                    nodes=payload.payloads,
                )
                return keep_going, payload.elapsed
    return None