Function build_add_order_params 

pub fn build_add_order_params(
    cmd: &SubmitOrder,
    order: &OrderAny,
    token: String,
    leverage: Option<u16>,
) -> Result<KrakenWsAddOrderParams>

Builds WebSocket add_order parameters from a Nautilus submit command and the cached order.

Errors

Returns an error if:

• The order side cannot be mapped to a Kraken side.
• The order type is not supported on the WS path.
• The time in force is not supported for the given order type.
• GTD time in force is missing expire_time.