Function calculate_time_in_force 

pub fn calculate_time_in_force(
    order_type: DydxOrderType,
    base_tif: DydxTimeInForce,
    post_only: bool,
    execution: Option<DydxOrderExecution>,
) -> Result<TimeInForce>

Calculate time-in-force for conditional orders.

Errors

Returns an error if the combination of parameters is invalid.