pub fn parse_depth_update(
msg: &BinanceFuturesDepthUpdateMsg,
instrument: &InstrumentAny,
ts_init: UnixNanos,
) -> BinanceWsResult<OrderBookDeltas>pub fn parse_depth_update(
msg: &BinanceFuturesDepthUpdateMsg,
instrument: &InstrumentAny,
ts_init: UnixNanos,
) -> BinanceWsResult<OrderBookDeltas>