flatAdjustment property

Price? flatAdjustment
getter/setter pair

Additive shipping rate modifier.

Can be negative. For example { "amount_micros": 1, "currency_code" : "USD" } adds $1 to the rate, { "amount_micros": -3, "currency_code" : "USD" } removes $3 from the rate.

Optional.

Implementation

Price? flatAdjustment;