copyWith method
Implementation
PaymayaDetails copyWith({
num? discount,
num? serviceCharge,
num? shippingFee,
num? tax,
num? subtotal,
}) {
return PaymayaDetails(
discount: discount ?? this.discount,
serviceCharge: serviceCharge ?? this.serviceCharge,
shippingFee: shippingFee ?? this.shippingFee,
tax: tax ?? this.tax,
subtotal: subtotal ?? this.subtotal,
);
}