@Test
public void getConversationMessages() throws Exception {

    server.enqueue(new MockResponse().setBody(file("messages/conversation_messages.json")));
    Response<List<ConversationMessage>, HttpError> response = resource.getConversationMessages("123", "123").execute();
    assertThat(response.body().size()).isEqualTo(2);
    assertThat(response.body().get(0).getContent()).isEqualTo("Yes of course!");
}