将列表转换为 Json - Circe

Question

如何创建一个看起来像这样的 Json (Circe)：

{
 "items": [{
   "field1": "somevalue",
   "field2": "somevalue2"
  },
  {
   "field1": "abc",
   "field2": "123abc"
  }]
}

val result = Json.fromFields(List("items" ->???))