fication, base_logger=base_logger)

    async def async_process(
        self,
        *,
        req: AsyncBoltRequest,
        resp: BoltResponse,
        next: Callable[[], Awaitable[BoltResponse]],
    ) -&gt; BoltResponse:
        if self._is_url_verification_request(req.body):
            return self._build_success_response(req.body)
        else:
            return await next()</code></pre>
</details>
<div class="desc"><p>A middleware can process request data before other middleware and listener func