@Override
    protected void doUpdate(final List<PluginData> dataList) {
        dataList.forEach(pluginDataSubscriber::onSubscribe);
    }
@Test
    public void testDoUpdate() {
        List<PluginData> pluginDataList = createFakePluginDataObjects(4);
        pluginDataHandler.doUpdate(pluginDataList);
        pluginDataList.forEach(verify(subscriber)::onSubscribe);
    }