How to add plugins in capacitor android

[donvie]

Register the plugin in com.companyname.appname.MainActivity#onCreate

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    List<Class<? extends Plugin>> additionalPlugins = new ArrayList<>();
    // Additional plugins you've installed go here
    // Ex: additionalPlugins.add(TotallyAwesomePlugin.class);
    additionalPlugins.add(SmsManagerPlugin.class);

    // Initializes the Bridge
    this.init(savedInstanceState, additionalPlugins);
}