copyWith method
Создает экземпляр с заданными параметрами
Implementation
@override
ExtendBindingRequest copyWith({
String? bindingId,
int? newExpiry,
String? language,
}) {
return ExtendBindingRequest(
bindingId: bindingId ?? this.bindingId,
newExpiry: newExpiry ?? this.newExpiry,
language: language ?? this.language,
);
}