#[unsafe(no_mangle)]pub extern "C" fn index_price_update_new(
instrument_id: InstrumentId,
value: Price,
ts_event: u64,
ts_init: u64,
) -> IndexPriceUpdate
#[unsafe(no_mangle)]pub extern "C" fn index_price_update_new(
instrument_id: InstrumentId,
value: Price,
ts_event: u64,
ts_init: u64,
) -> IndexPriceUpdate