@Test
public void getRichMenuTest() throws Exception {

    final RichMenuResponse richMenuReference = new RichMenuResponse(null, null, false, null, null, null);
    whenCall(retrofitMock.getRichMenu(any()), richMenuReference);
    // Do
    final RichMenuResponse richMenuResponse = target.getRichMenu("ID").get();
    // Verify
    verify(retrofitMock, only()).getRichMenu("ID");
    assertThat(richMenuResponse).isSameAs(richMenuReference);
}