@async_method_locker('FTXMarket._re_subscribe.locker')
async def _re_subscribe():
    (await self.send_json({'op': 'unsubscribe', 'channel': 'orderbook', 'market': market}))
    (await self.send_json({'op': 'subscribe', 'channel': 'orderbook', 'market': market}))
@async_method_locker('FTXMarket._re_subscribe.locker')
async def _re_subscribe():
    (await self.send_json({'op': 'unsubscribe', 'channel': 'orderbook', 'market': market}))
    (await self.send_json({'op': 'subscribe', 'channel': 'orderbook', 'market': market}))