Simple Deserializer for fuel

Deserializer.kt

import com.github.kittinunf.fuel.core.ResponseDeserializable
import com.google.gson.Gson
import com.google.gson.GsonBuilder
import com.google.gson.JsonDeserializer
import com.google.gson.reflect.TypeToken

class Block() {

  class Deserializer : ResponseDeserializable<Block> {
    override fun deserialize(reader: Reader) = Gson().fromJson(reader, Block::class.java)
  }

  class ListDeserializer : ResponseDeserializable<ArrayList<Block>> {
    override fun deserialize(reader: Reader): ArrayList<Block> {

      val builder = GsonBuilder()

      // Register an adapter to manage the date types as long values
      builder.registerTypeAdapter(Date::class.java, JsonDeserializer<Date> { json, typeOfT, context -> Date(json.asJsonPrimitive.asLong) })

      val gson = builder.create()
      val type = object : TypeToken<ArrayList<Block>>() {}.type
      return gson.fromJson(reader, type)
    }
  }
}