WS OHLC subscribe does not return all informations

[lexdevelop]

Hi I notice that subscribing on ohlc using web socket does not return all data.

this.krakenClient.ws.ohlc({interval: topic.interval})
        .on('update', (update, pair) => {
          this.processOhlcMessage(update, pair)
        })
        .on('status', (status) => {
          this.logger.log(`${status.event}, ${status.channelName} for pair ${status.pair} = ${status.status}`)
        })
        .on('error', (error, pair) => {
          this.logger.error(`Unable to get ohlc data from Kraken for pair: ${pair.pair}`, error.stack)
        })
        .subscribe(...topic.pairs)

on update event will return array of data and pair defined here https://docs.kraken.com/websockets/#message-ohlc but it will not return channel name. Chanell name is important because we can extract interval from it, for example ohlc5-1440, we know that this is update for interval 1440.
It is even better if we can have third parameter return on update event for ohlc which is interval specified for which we are getting response, or simply return channel name with array and pairs.