[Binance][Streaming] access to the raw OrderBookUpdate stream (i.e. binance depthUpdate)

[kpe]

Hi, I would like to store locally to a file some raw stream data from binance like depthUpdate and aggTrade. While the BinanceStreamingMarketDataService provides a getRawTrades() there is no getRawOrderBookUpdates().

I have prepared a patch, but as I'm new to the project, I hope someone can take a look.

[walec51]

any progress on this PR?

if not I will have to close it

[rizer1980]

hi. I think it is alredy implemented in BinanceStreamingMarketDataService, public getOrderBookUpdates method