使用spray-json将嵌套的case类转换为JSON

Question

如果我有嵌套的case类，如何使用spray-json将它们转换为JSON？

例如，我的结构类似于：

case class MyObj1(name: String, myObject2: MyObject2)
case class MyObj2(myObjec3s: Seq[MyObj3])
case class MyObj3(name1: String, name2: String)

The json would look something like:
{
  "name": "",
  "myObject2": [ { "name1": "", "name2": "" }, { "name1": "", "name2": "" }, .... ]
}