api.commons.integrations.Fee(Fee)

A fee that is shown to the user on the payment confirmation screen.
All fees must have a name and a rate.
display and destination_fields can be set to change how the fee amount is sent to the api call.
The default for display = false, and destination_fields = '' which will roll the fee up in the total.

{
    "flat": {
        "currency_code": "string",
        "units": 0,
        "nanos": 0
    }
}