如何存储泛型类型以避免Swift中需要它的内部结构？

protocol AnyStorage {
    func store(value: Any)
    func retrieve() -> Any?
}

class GenericStorage<T>: AnyStorage {
    private var value: T?
    
    func store(value: Any) {
        self.value = value as? T
    }
    
    func retrieve() -> Any? {
        return value
    }
}

class TypeErasedStorage: AnyStorage {
    private var storage: AnyStorage
    
    init<T>(_ storage: GenericStorage<T>) {
        self.storage = storage
    }
    
    func store(value: Any) {
        storage.store(value: value)
    }
    
    func retrieve() -> Any? {
        return storage.retrieve()
    }
}

let genericStorage = GenericStorage<Int>()
let typeErasedStorage = TypeErasedStorage(genericStorage)

typeErasedStorage.store(value: 10)
let retrievedValue = typeErasedStorage.retrieve() as? Int
print(retrievedValue) // 输出 Optional(10)