如何从使用分页(Androidx)库的RecyclerView中删除/添加项目？

implementation 'androidx.paging:paging-runtime:3.0.0'

class MyAdapter : PagingDataAdapter<Item, MyViewHolder>(diffCallback) {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
        val view = LayoutInflater.from(parent.context).inflate(R.layout.item_layout, parent, false)
        return MyViewHolder(view)
    }

    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
        val item = getItem(position)
        item?.let {
            holder.bind(it)
        }
    }

    companion object {
        private val diffCallback = object : DiffUtil.ItemCallback<Item>() {
            override fun areItemsTheSame(oldItem: Item, newItem: Item): Boolean {
                return oldItem.id == newItem.id
            }

            override fun areContentsTheSame(oldItem: Item, newItem: Item): Boolean {
                return oldItem == newItem
            }
        }
    }
}

class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

    fun bind(item: Item) {
        // 绑定数据到视图
    }
}

val recyclerView: RecyclerView = findViewById(R.id.recyclerView)
val adapter = MyAdapter()

recyclerView.adapter = adapter

lifecycleScope.launch {
    val data: Flow<PagingData<Item>> = fetchData() // 从网络或数据库获取数据的方法
    adapter.submitData(data)
}

adapter.notifyItemRemoved(position)

adapter.notifyItemInserted(position)