...As well, it mounts /_status, which will return {"status": "ok"} if the middleware is running. If verify is specified in the bot options, it will mount a handler for GET requests that verifies the webhook. The underlying method used by bot.middleware() to parse the message payload, and fire the appropriate events. Use this if you've already implemented your own middleware or route handlers to receive the webhook request, and just want to fire the events on the bot instance.