initializeAddons() {
    if (this._addonsInitialized) {
      return;
    }
    this._addonsInitialized = true;
    this._didDiscoverAddons = false;

    logger.info('initializeAddons for: %s', this.name());

    this.discoverAddons();

    this.addons = instantiateAddons(this, this, this.addonPackages);
    this.addons.forEach((addon) => logger.info('addon: %s', addon.name));
  }
Loads and initializes all addons for this project.

    @private
    @method initializeAddons