Function parse_current_order_fill_report 

pub fn parse_current_order_fill_report(
    order: &CurrentOrderSummary,
    account_id: AccountId,
    currency: Currency,
    trade_id: TradeId,
    last_qty: Quantity,
    last_px: Price,
    ts_init: UnixNanos,
) -> Result<FillReport>

Parses a Betfair CurrentOrderSummary into a Nautilus [FillReport].

The caller supplies an incremental quantity and price derived from the cumulative order state.

Errors

Returns an error if the order timestamps cannot be parsed.