private val moshi = Moshi.Builder().build()
  private val gistJsonAdapter = moshi.adapter(Gist::class.java)

  fun run() {
    val request =
      Request.Builder()
        .url("https://api.github.com/gists/c2a7c39532239ff261be")
        .build()
    client.newCall(request).execute().use { response ->
      if (!response.isSuccessful) throw IOException("Unexpected code $response")