.header("User-Agent", "SyncApiTest")
        .build()
    val call = client.newCall(request)
    val response = call.execute()
    response.body.close()
    assertFailsWith<IllegalStateException> {
      call.execute()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("Already Executed")
    }
    assertFailsWith<IllegalStateException> {
      call.enqueue(callback)
    }.also { expected ->