pricePer property
getter/setter pair
Price per unit, kilogram, ..?
if the price is about a barcode-less product (if category_tag is provided), this field must be set to KILOGRAM or UNIT (KILOGRAM by default). This field is set to null and ignored if product_code is provided.
Implementation
@JsonKey(name: 'price_per')
PricePer? pricePer;