• Not like that, lol

    Just saying, instead of this monstrosity

    CreateOrderRequest(user,
                       productDetails,
                       pricingCalculator,
                       order => order.internalNumber)
    

    Just use

    CreateOrderRequest(
        user,
        ...
    

    Putting the first argument on a separate line.

    Same if you have an if using a bunch of and (one condition per line, first one on a new line instead of same line as the if) and similar situations.