如何在swift中分配泛型回调的参数类型？

protocol CallbackDelegate {
    associatedtype T
    func callback(_ value: T)
}

class CallbackHandler<T>: CallbackDelegate {
    typealias CallbackType = (T) -> Void
    var callback: CallbackType?
    
    func callback(_ value: T) {
        callback?(value)
    }
}

let handler = CallbackHandler<Int>()
handler.callback = { value in
    // 处理回调参数
    print(value)
}

// 调用回调函数
handler.callback(10)