Function parse_orderbook_depth10 

pub fn parse_orderbook_depth10(
    msg: &DeriveOrderbookMsg,
    price_precision: u8,
    size_precision: u8,
    ts_init: UnixNanos,
) -> Result<OrderBookDepth10>

Parses an order book snapshot message into a fixed top-10 depth update.

Derive sends snapshots for the requested order book channel. Missing levels are filled with zero-size orders so the fixed arrays are always populated.

Errors

Returns an error when a price, size, or timestamp cannot be converted.