a.swift

extension TypeWrapperStorage: StorageAware {
  public func entry<T: Codable>(forKey key: String) throws -> Entry<T> {
    let wrapperEntry = try internalStorage.entry(forKey: key) as Entry<TypeWrapper<T>>
    return Entry(object: wrapperEntry.object.object, expiry: wrapperEntry.expiry)
  }
 
  public func setObject<T: Codable>(_ object: T, forKey key: String,
                                    expiry: Expiry? = nil) throws {
    let wrapper = TypeWrapper<T>(object: object)
    try internalStorage.setObject(wrapper, forKey: key, expiry: expiry)
  }
}