如何使用gson.fromJson来处理使用Groupie适配器的类？

Question

尝试时出现运行时错误

val gson = GsonBuilder().create()
val user = gson.fromJson("{\"name\":\"Alex\"}", User::class.java)

用户在哪里

class User(val name: String) : Item<ViewHolder>() {
    override fun bind(viewHolder: ViewHolder, position: Int) {
       // code
    }

    override fun getLayout(): Int {
        // code
    }
}