ShippingMethodRounding

Value	Description
`NEAREST_HALF`	`NEAREST_HALF` in the v2 API.
`NEAREST_QUARTER`	`NEAREST_QUARTER` in the v2 API.
`NEAREST_TENTH`	`NEAREST_TENTH` in the v2 API.
`NEAREST_TWENTIETH`	`NEAREST_TWENTIETH` in the v2 API.
`NEAREST_WHOLE`	`NEAREST_WHOLE` in the v2 API.
`NEAREST_WHOLE_MINUS_FIVE`	`NEAREST_WHOLE_MINUS_FIVE` in the v2 API.
`NEAREST_WHOLE_MINUS_ONE`	`NEAREST_WHOLE_MINUS_ONE` in the v2 API.