optional<T extends Object> method

OptionalAttribute<T> optional<T extends Object>({
  1. required String key,
  2. AttributeTransform<T>? transform,
})

Implementation

OptionalAttribute<T> optional<T extends Object>({required String key, AttributeTransform<T>? transform}) {
  return OptionalAttribute<T>(key: key, provider: this, transform: transform);
}