toJson method
Implementation
@override
Map<String, Object?> toJson() => {
if (weightUnit != null) "weight_unit": encodeValue(weightUnit),
if (weight != null) "weight": encodeValue(weight),
if (size != null) "size": encodeValue(size),
if (volumeUnit != null) "volume_unit": encodeValue(volumeUnit),
if (volume != null) "volume": encodeValue(volume),
if (length != null) "length": encodeValue(length),
if (height != null) "height": encodeValue(height),
if (width != null) "width": encodeValue(width),
};