public void createOrUpdateItem(final String key, final Object value, final String comment) {
        this.createOrUpdateItem(key, GsonUtils.getInstance().toJson(value), comment);
    }
@Test
    public void testCreateOrUpdateItem() {
        doNothing().when(apolloClient)
                .createOrUpdateItem(Mockito.any(), Mockito.<Object>any(), Mockito.any());
        apolloClient.createOrUpdateItem("Key", (Object) "Value", "Comment");
        verify(apolloClient).createOrUpdateItem(Mockito.any(), Mockito.<Object>any(), Mockito.any());
    }