copyWith method
Implementation
MonoExistingCustomerModel copyWith({
  String? id,
}) {
  return MonoExistingCustomerModel(
    id: id ?? this.id,
  );
}MonoExistingCustomerModel copyWith({
  String? id,
}) {
  return MonoExistingCustomerModel(
    id: id ?? this.id,
  );
}