@Override
    public void registerPropertyPlugin(SAPropertyPlugin plugin) {

    }
@Test
    public void registerPropertyPlugin() {
        mSensorsAPI.registerPropertyPlugin(new SAPropertyPlugin() {
            @Override
            public void properties(SAPropertiesFetcher fetcher) {
                try {
                    fetcher.getProperties().put("Plugin", "Plugin");
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
        });
        mSensorsAPI.track("TestTrackEvent", new JSONObject());
    }