pub fn create_currency_pair(
info: &InstrumentInfo,
instrument_id: InstrumentId,
raw_symbol: Symbol,
price_increment: Price,
size_increment: Quantity,
margin_init: Decimal,
margin_maint: Decimal,
maker_fee: Decimal,
taker_fee: Decimal,
ts_event: UnixNanos,
ts_init: UnixNanos,
) -> InstrumentAny